Roots and rhizomesHemostaticRhizoma Zingiberis Praeparatum

Pao Jiang (Blast-fried Ginger)

Q: What is Pao Jiang? Are Sheng Jiang, Gan Jiang and Jiang Tan the same?

Official Pao Jiang (炮姜) is a processed product of dried ginger —sand-tossed until puffed and brown-black. The pharmacopoeial name is Zingiberis Rhizoma Praeparatum , also called Hei Jiang. Sheng Jiang is the fresh rhizome: acrid-warm, releases the exterior, scatters cold and warms the middle to stop vomit. Gan Jiang is the dried rhizome: acrid-hot, warms the middle, restores Yang and unblocks the vessels, dries damp and transforms phlegm. Jiang Tan is charred to retain nature: bitter-astringent-warm, stays rather than moves, more dedicated to astringing and stopping bleeding. Four preparations of one plant—not interchangeable by weight. Write Pao Jiang; do not dispense fresh ginger in its place.

Q: What are the TCM properties and traditional uses of Pao Jiang?

According to the Chinese Pharmacopoeia, Pao Jiang is acrid and hot , enters the Spleen, Stomach and Kidney channels, and acts to warm the vessels and stop bleeding, and warm the middle to stop pain . It is used for Yang-deficiency bleeding, hematemesis, epistaxis and flooding and spotting, Spleen-Stomach deficient cold, and abdominal pain with vomiting and diarrhea. Acrid-hot yet milder and more lingering than Gan Jiang, it enters the Blood aspect—suited to deficient-cold bleeding and middle-jiao cold pain, not to Yin deficiency with heat or reckless Blood from heat.

Q: What is the usual dosage? Can it be used daily to warm the middle and stop bleeding?

The pharmacopoeial decoction dose is 3–9 g . It is not a daily “womb-warming ginger tea.” Yin-deficiency dry mouth and bright-red Blood-heat only overflow more when warmed. Deficient-cold abdominal pain and Yang-deficiency bleeding need a short course naming Pao Jiang or Jiang Tan—not a self-made long drink.

Q: How do you choose and store Pao Jiang?

Choose puffed irregular lumps, brown-black or brown on the surface, light and spongy, yellow-brown at the center, with a distinctive aroma and a slightly acrid-pungent taste . Lots burnt to ash, scentless, or unpuffed dried ginger sold as Pao Jiang are unused. Store cool and dry against moths. Buy pharmacopoeial Pao Jiang; do not replace it with kitchen old ginger or an equal weight of Jiang Tan without sorting warming the vessels versus astringing.

A practical guide to Pao Jiang: what it is, how Traditional Chinese Medicine uses it, the classical formulas it appears in, and who should be careful with it.

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Last reviewed Oct 13, 2026

Quick Facts

Latin Name	Rhizoma Zingiberis Praeparatum
Chinese Name & Pinyin	炮薑 · Pao Jiang
Medicinal Part	Roots and rhizomes
The herb	Pao Jiang is sand-scalded dried ginger, brown and puffed. Sheng Jiang, Gan Jiang, and ginger charcoal are different forms.
Nature and channels	Acrid, hot. Enters the Spleen, Stomach, and Kidney. Acrid heat warms and unblocks. After processing it is less mobile and can stop bleeding.
Pharmacopoeia line	Warms the channels and stops bleeding. Warms the middle and relieves pain. Used for yang-deficiency bleeding, vomiting of blood and flooding, spleen-stomach deficiency-cold, and abdominal pain with vomiting or diarrhea.
Pattern cues	Pale thin bleeding. Flooding with fear of cold. Cold abdominal pain. Watery vomit or diarrhea. Pale tongue with white coating.
In this article	Pao Jiang versus fresh ginger, Gan Jiang, and ginger charcoal. Cold-pattern bleeding versus reckless hot blood. Why yin-deficiency heat is a stop sign. Who should skip it.

What Is Pao Jiang?

Pao Jiang (炮姜; Pào Jiāng; Latin: Zingiberis Rhizoma Praeparatum; English: blast-fried ginger) is dried ginger that has been sand-scalded until puffed and brown. In Chinese medicine it is a channel-warming, bleeding-stopping herb. It is acrid and hot, enters the Spleen, Stomach, and Kidney channels, and its core actions are to warm the channels and stop bleeding, and to warm the middle and relieve pain. It is the same plant as fresh and dried ginger, at a different layer. Fresh ginger releases the exterior and stops vomiting. Dried ginger warms the middle, restores yang, and transforms thin mucus. Pao Jiang holds rather than runs. It is used to warm the channels and stop bleeding. Ginger charcoal, fried to preserve nature, astringes blood even more. Kitchen ginger cannot be used at the hemostatic indication of Pao Jiang. Processing belongs in a qualified pharmacy. Do not sand-scald it at home.

It is used most often for three patterns:

Yang-deficiency bleeding — vomiting blood, bloody stool, or flooding that is pale and thin, with cold limbs
Spleen–Stomach deficiency-cold — cold abdominal pain, vomiting and diarrhea
Chong and Ren deficiency-cold — painful periods that like warmth, dark-dull flow

The usual decoction dose is 3–9 g. Yin-deficiency fire and reckless hot blood are contraindications. Bright-red bleeding with a dry red tongue gets worse if more heat is added. Acrid heat that holds in the middle is not a winter ginger candy.

When deficiency-cold bleeding or cold abdominal pain is present, Pao Jiang’s acrid heat holds and contains. That is why it is often paired with Ai Ye, Fu Zi, and Bai Zhu. It warms and holds more than it clears. Excess-heat bleeding and yin-deficiency night sweats are injured further if more heat is added.

Pao Jiang is not a catch-all for bleeding or cold pain. In bright-red blood-heat or yin-deficiency fire, using it alone can assist fire and stir blood. Pao Jiang, Gan Jiang, or charcoal should be decided by a licensed Chinese medicine practitioner after pattern diagnosis.

Pao Jiang: Materia Medica Profile

Identification & Quality Standard

Rhizoma Zingiberis Praeparatum

Botanical Origin

The blast-fried processed rhizome of Zingiber officinale Rosc. (Zingiberaceae).

Production Regions

Processed throughout China from cultivated ginger, chiefly from Sichuan, Guizhou and Shandong.

Quality Requirements

Superior medicinal material is thoroughly processed, aromatic, and free of scorching to ash.

Macroscopic Features

Irregular inflated pieces, externally brownish-black and blistered; fracture brown; aromatic and pungent, less juicy than dried ginger.

Sourcing and Quality Identification

High-quality ginger is traditionally sourced from regions like Sichuan and Guizhou, though quality heavily depends on processing and storage.

Appearance: Irregular, puffed slices with a brownish or dark brown surface. The inside is porous, light, and brittle.
Aroma and Taste: It has a mild roasted aroma and a spicy, slightly bitter taste.
Comparison: Compared to Sheng Gan Jiang (Raw Dried Ginger)—which is harder, lighter in color, and much spicier—Pao Jiang has a milder dispersing effect but a stronger warming nature due to the roasting process.

Traditional Properties & Historical Lineage

Nature, Flavour & Channel Tropism

Bitter, Astringent; WarmSpleenStomachLiver

1. Historical Records in Materia Medica

Ming Yi Bie Lu: Noted that dried ginger "warms the middle, stops bleeding, stops sweating, and expels wind-dampness."
Ben Cao Gang Mu: Recorded that Pao Jiang "warms the middle to stop diarrhea and treats postpartum blood dizziness."
De Pei Ben Cao: Stated it "stays without moving, treats stomach cold, and stops abdominal pain."

2. Evolution of Medicinal Understanding

Throughout history, TCM practitioners have valued Pao Jiang for specific, targeted uses:

Digestive Focus: Some emphasize its ability to warm the Spleen and Stomach, treating chronic diarrhea caused by internal cold.
Gynecological Focus: Others highlight its ability to warm the meridians to stop bleeding, often used for cold-induced menstrual irregularities or spotting.
Important Restriction: It is not a cure-all. Practitioners advise against using it for "Heat" constitutions or active inflammation, as its strong warming nature can aggravate internal heat.

Core Efficacies & Traditional Applications

Traditional Functions

Warms the channels and stops bleeding, warms the middle and relieves pain. Apply to deficiency-cold bleeding, flooding and spotting, and abdominal pain from middle-jiao cold.

1. Primary Focus: Warming the Middle to Stop Diarrhea

Traditional Function: Pao Jiang (Roasted Ginger) warms the "Middle and Lower Jiao" (Spleen and Stomach) to dispel internal cold and restore digestive function, effectively stopping cold-induced diarrhea.
Common Indications: It is used for "Spleen and Stomach Deficient Cold," which presents as chronic abdominal cold pain that feels better with warmth and pressure. Other signs include loose or watery stools, undigested food in the stool, worsening symptoms after eating cold foods, poor appetite, and cold hands and feet.
Common Pairings: For digestion, it is often paired with Bai Zhu (Atractylodes Rhizome) and Dang Shen (Codonopsis Root) to strengthen the Spleen. If diarrhea is severe, it can be combined with Fu Ling (Poria) and Shan Yao (Chinese Yam) to help process water and dampness.
When to Avoid: Do not use if you have a "Heat" constitution or "Excess Fire" (symptoms include foul-smelling stools, a burning sensation during bowel movements, or a dry, bitter mouth). Using it can worsen these heat-related symptoms.

2. Secondary Focus: Warming Meridians to Stop Bleeding

Traditional Function: It warms the meridians to dispel cold blockages, helping to stop bleeding caused by cold stagnation and blood stasis.
Common Indications: It is traditionally used for "Deficient Cold" bleeding. This includes cold-induced menstrual irregularities (sluggish flow with small clots and cold abdominal pain) or postpartum lingering spotting, often accompanied by cold extremities and a pale complexion.
Common Pairings: It is frequently paired with Ai Ye (Mugwort Leaf) and Dang Gui (Angelica Root) to warm the blood and meridians. For heavier bleeding, it is combined with E Jiao (Donkey-hide Gelatin) and Shu Di (Prepared Rehmannia Root) to nourish the blood.
When to Avoid: Avoid using it for heat-induced bleeding (characterized by bright red, sticky blood, and a dry mouth or throat), as its warming nature will aggravate the condition.

3. Common Herb Pairings: The Synergistic Duo

A classic combination is Pao Jiang (Roasted Ginger) and Bai Zhu (Atractylodes Rhizome).

Pao Jiang focuses on warming the center and stopping diarrhea, while Bai Zhu strengthens the Spleen and dries up dampness.
Together, they create a synergistic effect perfect for chronic diarrhea, poor appetite, and cold abdominal pain. As always, this is a clinical pairing that should be prescribed and adjusted by a professional based on your specific symptoms.

Modern Research

Modern research offers useful context, but Traditional Chinese Medicine prescribes on whole-pattern diagnosis rather than isolated compounds.

1. Key Chemical Components

Laboratory tests have identified several key components in Pao Jiang:

Gingerols, Volatile Oils, and Polysaccharides: Gingerols are the primary active compounds. In vitro studies show they gently regulate intestinal smooth muscles.
Animal Studies: Extracts may improve gastrointestinal motility in animal models simulating "Cold" deficiency. However, robust human clinical trials are still needed to confirm these specific effects.

2. Modern Pharmacological Focus

Current modern research largely focuses on its impact on the gastrointestinal tract and potential regulation of bleeding indicators.

Gut Regulation: Lab tests show Pao Jiang extracts have a bidirectional regulatory effect on intestinal muscle contractions, though how this perfectly translates to traditional clinical use is still being explored.

3. Limitations of Modern Research

It is important to view modern lab results with appropriate context:

Lab vs. Real Life: In vitro (petri dish) and animal studies cannot be directly equated to how the herb works in a complex human body.
Extracts vs. Whole Herbs: Modern studies often use isolated extracts or single compounds, which have different dosages and forms compared to the traditional whole-herb decoction of Pao Jiang.
Inconsistent Methodologies: Variations in preparation methods and dosages across different studies make it hard to draw universal scientific conclusions.
Synergistic Effect: The healing power of TCM relies on the combined, synergistic effect of all compounds in the whole herb, rather than the isolated action of just one chemical.

Comparing Similar Herbs

1. Shared Traits with Similar Herbs

Pao Jiang (Roasted Ginger) and Gan Jiang (Dried Ginger) share several traits:

Both are used to warm the middle, dispel cold, and treat cold abdominal pain.
Both target traditional "Spleen and Stomach Deficient Cold" patterns.
Both require caution or avoidance in people with "Heat" constitutions.

2. Core Differences

Nature and Direction: Pao Jiang has a "sinking" and converging nature, focusing its warmth on the lower body (Middle and Lower Jiao). Gan Jiang has a "dispersing" nature, spreading its warmth outward and upward to the Upper Jiao.
Focus of Action: Pao Jiang excels at stopping chronic diarrhea and bleeding caused by long-term cold. Gan Jiang is a stronger "rescuer" used to scatter acute cold, stop vomiting, and revive the body's Yang energy (e.g., in cases of severe, icy limbs).
Application: Pao Jiang is typically used in formulas for chronic, lingering cold conditions. Gan Jiang is preferred for acute, sudden cold attacks (like sudden icy stomach pain and vomiting clear fluids).
Contraindications: Because Gan Jiang is highly spicy and dispersing, it is strictly forbidden for people with Yin deficiency (internal dryness and heat), whereas Pao Jiang is slightly milder in its drying effect, though still warm.

3. A One-Sentence Summary

Pao Jiang (Roasted Ginger) is your go-to for warming the lower body to stop chronic diarrhea and bleeding, while Gan Jiang (Dried Ginger) is better for scattering acute cold, relieving sudden stomach pain, and stopping vomiting.

Classical Formulas Containing Pao Jiang

Sheng Hua Tang

生化湯Assistant

Formula CategoryBlood-Invigorating FormulasPrimary PatternBlood StasisPrimary FunctionInvigorate Blood, dispel stasis, warm channelsRelated ConditionsAbdominal Pain·Irregular Menstruation·Cold Limbs

View Formula Profile Read Complete Guide

Yang He Tang

陽和湯

Formula CategoryYang-Tonifying FormulasPrimary PatternYang DeficiencyPrimary FunctionWarm Yang, nourish blood, disperse cold, unblock stagnationRelated ConditionsJoint Discomfort·Cold Limbs·Fatigue & Low Energy

View Formula Profile Read Complete Guide

Formulas vs. Single Herbs

Synergy is Key: A formula is a balanced team. The healing power comes from how the herbs interact, so a single herb cannot simply replicate a full formula's effects.
Holistic Balance: The exact dosage and combination in a formula affect the entire body. Never try to mix or alter these formulas at home based on internet articles.

Diet & Daily Home Use

1. Home Herbal Meals

Roasted Ginger and Mutton Porridge (Low Risk Example):
- Ingredients: 3g Pao Jiang (Roasted Ginger), 50g mutton (diced), 100g rice, 2 slices of fresh ginger, a pinch of salt.
- Method: Wash the rice and mutton. Wrap the Pao Jiang in a small cheesecloth bag. Put everything in a pot with water, bring to a boil, then simmer on low heat for 30 minutes. Add salt to taste.
- Best For: Fall and winter care for those with a cold stomach, loose stools, and cold hands/feet.
- Not For: People with heat constitutions, excess fire, or pregnant women.
- Frequency: 1 to 2 times a week. Do not eat continuously. Make sure to buy authentic processed Pao Jiang from a pharmacy, not regular dried ginger.

2. Processing Differences and Brewing

Raw vs. Processed: The unroasted Gan Jiang is highly spicy and dispersing. The roasting process to create Pao Jiang reduces the harsh spiciness and enhances its ability to stay in the lower body to warm the organs.
Brewing: It does not require special cooking methods. It can be boiled directly with other herbs or food ingredients. Remember that culinary doses are much smaller than clinical medical doses.

3. Dosage and Usage Cycle

Dosage: Standard clinical prescriptions range from 3g to 6g. For home dietary use, keep it to 2g to 3g.
Cycle: Use only as a short-term support (no more than 1 week continuously). If symptoms do not improve, consult a doctor to adjust your plan.

Contraindications & Safety Warnings

1. Who Should Avoid It

Heat Constitutions: If you have a dry/bitter mouth, foul-smelling stools, or a sore throat, avoid this herb to prevent adding "fire to fire."
Pregnancy and Nursing: Pregnant and breastfeeding women must be very cautious and consult a professional, as the strong warming nature can affect fetal or infant health.
Special Populations: Children and the elderly with weak digestion should strictly control the dosage. Those with liver or kidney issues should consult a doctor to avoid overburdening their organs.
Allergies: Avoid if you are allergic to ginger or plants in the ginger family.

2. Drug Interactions and Dietary Notes

Medication Risks: Pao Jiang may interact with blood thinners, potentially affecting coagulation. It may also amplify the effects of blood pressure or blood sugar medications, leading to abnormally low levels.
Always consult your doctor or pharmacist if you are taking prescription drugs before adding herbal remedies to your routine.

3. Adverse Reactions and Overdose Risks

Side Effects: Overuse can lead to "internal fire" symptoms, such as dry mouth, sore throat, and constipation.
When to Seek Help: If you experience severe allergic reactions, persistent vomiting, breathing difficulties, or a sudden worsening of your symptoms, stop use immediately and seek emergency medical care.

Frequently Asked Questions About Pao Jiang

What is Pao Jiang? Are Sheng Jiang, Gan Jiang and Jiang Tan the same?

Official Pao Jiang (炮姜) is a processed product of dried ginger—sand-tossed until puffed and brown-black. The pharmacopoeial name is Zingiberis Rhizoma Praeparatum, also called Hei Jiang. Sheng Jiang is the fresh rhizome: acrid-warm, releases the exterior, scatters cold and warms the middle to stop vomit. Gan Jiang is the dried rhizome: acrid-hot, warms the middle, restores Yang and unblocks the vessels, dries damp and transforms phlegm. Jiang Tan is charred to retain nature: bitter-astringent-warm, stays rather than moves, more dedicated to astringing and stopping bleeding. Four preparations of one plant—not interchangeable by weight. Write Pao Jiang; do not dispense fresh ginger in its place.

What are the TCM properties and traditional uses of Pao Jiang?

According to the Chinese Pharmacopoeia, Pao Jiang is acrid and hot, enters the Spleen, Stomach and Kidney channels, and acts to warm the vessels and stop bleeding, and warm the middle to stop pain. It is used for Yang-deficiency bleeding, hematemesis, epistaxis and flooding and spotting, Spleen-Stomach deficient cold, and abdominal pain with vomiting and diarrhea. Acrid-hot yet milder and more lingering than Gan Jiang, it enters the Blood aspect—suited to deficient-cold bleeding and middle-jiao cold pain, not to Yin deficiency with heat or reckless Blood from heat.

How do you choose Pao Jiang versus Gan Jiang and Jiang Tan? Is a special decoction needed?

Cold epigastric pain with vomiting and diarrhea that needs warming the middle favors Gan Jiang or Pao Jiang; Yang-deficiency bleeding and postpartum lochia that is cold favors Pao Jiang; urgent, copious bleeding that needs astringing favors Jiang Tan. Slices go in the pot; first- or late-decoction is not required. To enter Blood and stop bleeding use Pao Jiang or Jiang Tan—not fresh ginger.

What is the usual dosage? Can it be used daily to warm the middle and stop bleeding?

The pharmacopoeial decoction dose is 3–9 g. It is not a daily “womb-warming ginger tea.” Yin-deficiency dry mouth and bright-red Blood-heat only overflow more when warmed. Deficient-cold abdominal pain and Yang-deficiency bleeding need a short course naming Pao Jiang or Jiang Tan—not a self-made long drink.

What are the contraindications? Can it be used in pregnancy?

Avoid in Yin deficiency with heat; use caution or avoid in pregnancy. Acrid-hot entering Blood is wrong when Blood moves recklessly from heat or the tongue is red and dry. Classical texts often forbid Pao Jiang and Jiang Tan in pregnancy as consuming Yin and stirring Blood. Stop and seek care if vexing heat or bright-red bleeding appears.

Can Pao Jiang stop bleeding, warm the middle and stop diarrhea?

It can help deficient-cold patterns. Postpartum stasis with cold joins angelica, Chuanxiong and peach kernel in Sheng Hua Tang. Spleen-Stomach deficient cold joins ginseng, white atractylodes and licorice, near Li Zhong but milder. Flooding from deficient cold joins ass-hide glue and mugwort. It warms Yang-deficiency bleeding and middle cold—not a specific for every hematemesis, every flooding or every diarrhea. Major hemorrhage and high fever are emergencies.

Can Pao Jiang be drunk daily as a womb-warming, cold-dispelling or brown-sugar ginger tea?

Kitchen brown-sugar ginger drinks usually use fresh or dried ginger—not pharmacopoeial Pao Jiang. Deficient cold may enter a short formula; Yin-deficiency Blood heat only grows drier. “Pao Jiang warms the womb and stops bleeding” does not replace gynecology. Warming the vessels to stop bleeding should name Pao Jiang or Jiang Tan and a 3–9 g dose.

How do you choose among Pao Jiang, Sheng Jiang, Gan Jiang, Jiang Tan and Ai Ye?

Fresh ginger is acrid-warm: releases the exterior, scatters cold, warms the middle to stop vomit and transforms phlegm—mainly dispersing. Dried ginger is acrid-hot: warms the middle, restores Yang, dries damp and transforms phlegm—mainly holding interior cold. Blast-fried ginger is acrid-hot but milder: warms the vessels to stop bleeding and warms the middle to stop pain—enters the Blood aspect. Charred ginger is bitter-astringent-warm: more dedicated to astringing and stopping bleeding. Mugwort is acrid-bitter-warm: warms the vessels to stop bleeding, scatters cold to stop pain and calms the fetus. Exterior cold with vomit favors Sheng Jiang; interior cold with cold limbs favors Gan Jiang; Yang-deficiency bleeding and postpartum cold stasis favor Pao Jiang; urgent copious bleeding favors Jiang Tan; deficient-cold flooding that also needs calming the fetus favors Ai Ye. They may be paired; all are wrong as pure warming when Blood moves from heat.

Which herbs is Pao Jiang combined with? What are the representative formulas?

Unsmooth postpartum lochia with cold lower-abdominal pain joins angelica, Chuanxiong, peach kernel and licorice in Sheng Hua Tang. Deficient-cold flooding joins ass-hide glue, mugwort and angelica. Middle-cold abdominal pain joins white atractylodes and Codonopsis. Write Pao Jiang or Jiang Tan; do not dispense Sheng Jiang.

How do you choose and store Pao Jiang?

Choose puffed irregular lumps, brown-black or brown on the surface, light and spongy, yellow-brown at the center, with a distinctive aroma and a slightly acrid-pungent taste. Lots burnt to ash, scentless, or unpuffed dried ginger sold as Pao Jiang are unused. Store cool and dry against moths. Buy pharmacopoeial Pao Jiang; do not replace it with kitchen old ginger or an equal weight of Jiang Tan without sorting warming the vessels versus astringing.

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Medical Disclaimer — This article is provided for educational purposes only and describes traditional Chinese medicine concepts. It is not medical advice, and it is not intended to diagnose, treat, cure or prevent any disease. Always consult a qualified practitioner before using any herb, particularly if you are pregnant, nursing, taking medication or managing a diagnosed condition.