About This Herb*
Traditional Chinese Medicine background and properties
Herb Description*
Cong Bai is the white bulb of the common scallion or green onion, used in Chinese medicine for over two thousand years. It gently promotes sweating to relieve mild colds, warms the body to dispel chills and abdominal pain, and can be applied externally to sores and abscesses. As a familiar kitchen ingredient with a mild action profile, it is one of the most accessible herbs for home use.
Herb Category*
Main Actions*
- Induces Sweating and Releases the Exterior
- Disperses Cold
- Warms and Unblocks Yang
- Reduces Swelling and Resolves Toxicity
- Promotes Urination
How These Actions Work*
'Releases the exterior and induces sweating' means Cong Bai helps the body produce a mild sweat to push out Wind-Cold pathogens in the early stages of a common cold. Its sweating action is relatively gentle compared to stronger exterior-releasing herbs like Ma Huang or Gui Zhi, making it well suited for mild colds with slight chills, headache, and stuffy nose. It is often simply boiled in water with fresh ginger or fermented soybean (Dan Dou Chi) as a household remedy.
'Disperses Cold and unblocks Yang Qi' (散寒通阳 sàn hán tōng yáng) is arguably Cong Bai's most distinctive action. Because its hollow structure and pungent warmth can 'penetrate through' blockages, it is used in serious conditions where extreme internal Cold has blocked the normal circulation of Yang. In the classical formula Bai Tong Tang, Cong Bai is combined with Fu Zi and Gan Jiang specifically to restore the upward and downward flow of Yang Qi in critically ill patients with icy limbs and diarrhea. Applied externally to the navel area, heated Cong Bai can also help relieve Cold-type abdominal pain and urinary retention caused by Cold stagnation obstructing the Bladder's function.
'Resolves toxicity and disperses clumps' refers to Cong Bai's external use as a poultice. Mashed with honey, it can be applied to boils, abscesses, and early-stage breast lumps (mastitis) to reduce swelling and draw out toxins. It also has a traditional role in helping unblock breast milk flow when ducts are obstructed.
Patterns Addressed*
In TCM, symptoms cluster into recognizable patterns of disharmony that reveal what's out of balance in the body. Cong Bai is traditionally associated with these specific patterns.
The following describes this herb's classification within Traditional Chinese Medicine theory and is provided for educational purposes only.
Why Cong Bai addresses this pattern
Cong Bai is acrid and warm, entering the Lung channel, which makes it naturally suited to disperse Wind-Cold from the body's surface. Its acrid taste opens the pores and promotes mild sweating to expel the pathogen, while its warm nature counters the Cold. Because its diaphoretic (sweat-inducing) power is gentle rather than forceful, it is best for mild or early-stage Wind-Cold invasions rather than severe cases.
A practitioner would look for one or more of these signs
Mild chills and low-grade fever
Stuffy or runny nose with clear discharge
Headache from Wind-Cold
Mild body aches without sweating
Why Cong Bai addresses this pattern
In severe internal Cold conditions where excessive Yin has overwhelmed Yang and forced it outward or upward (a pattern called 'Yin excess repelling Yang', or 阴盛格阳 yīn shèng gé yáng), Cong Bai's unique ability to 'unblock Yang Qi' (通阳 tōng yáng) becomes critical. Its acrid warmth penetrates through Cold blockages to reconnect the upper and lower body's Yang circulation, allowing warming herbs like Fu Zi and Gan Jiang to reach their target. This is a serious, life-threatening pattern and Cong Bai plays a key supporting role in the formula Bai Tong Tang from the Shang Han Lun.
A practitioner would look for one or more of these signs
Watery diarrhea with undigested food
Icy cold hands and feet (reversal cold)
Paradoxical facial flushing from displaced Yang
Why Cong Bai addresses this pattern
When Cold congeals in the lower abdomen, it can obstruct Qi movement and impair the Bladder's ability to transform fluids, leading to urinary difficulty and abdominal pain. Cong Bai's warm, pungent, and penetrating nature can disperse this local Cold accumulation and restore Qi flow. For this pattern it is often applied externally (heated and placed on the navel area) rather than taken internally.
A practitioner would look for one or more of these signs
Difficulty urinating due to Cold
Cold abdominal pain, improved by warmth
TCM Properties*
Warm
Acrid / Pungent (辛 xīn)
Bulb (鳞茎 lín jīng)
This is partial information on the herb's TCM properties. More detailed information is available on the herb's dedicated page
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.