GB28 Weidao

Reviewed by · Licensed Acupuncturist & TCM Physician · Last reviewed June 2026

GB28 (Weidao, “Weidao”) is an acupuncture point on the Gallbladder Channel Meridian. It is located on the lateral abdomen, 5.3 cun inferior to Zhangmen (LR13) and anterior and inferior to the anterior superior iliac spine (ASIS). This places it approximately 0.5 cun anterior and inferior to Wushu (GB27). It regulates the Dai Mai, resolves dampness, descends rebellious Qi, and harmonizes the Sanjiao.

Location

On the lateral abdomen, 5.3 cun inferior to Zhangmen (LR13) and anterior and inferior to the anterior superior iliac spine (ASIS). This places it approximately 0.5 cun anterior and inferior to Wushu (GB27).

Needling

Perpendicular insertion, 0.8 to 1.5 cun.

TCM functions

Regulates the Dai Mai, resolves dampness, descends rebellious Qi, and harmonizes the Sanjiao.

Indications

Incessant rebellious vomiting, water swelling (edema), Sanjiao disharmony, no desire to eat, incessant rebellious cough, water qi in the Sanjiao, inability to eat, abdominal fullness, waist feels like sitting in water.

Clinical notes

As a meeting point of the Gallbladder channel and the Dai Mai, Weidao is a key point for regulating the Girdle Vessel. It is used for disorders where dampness and Qi stagnate in the lower and middle jiao, manifesting as edema, abdominal fullness, and digestive issues like vomiting and poor appetite. Its name, 'Linking Path', highlights its role in connecting and regulating the flow between these two important vessels, making it useful for gynecological issues and problems of the waist and hips, although these are not explicitly stated in the provided classics.

In the classical sources

Classical text; the translation was prepared with AI and is not clinical advice.

《醫學綱目·刺灸》 Yīxué Gāngmù · Cìjiǔ — Outline of Medicine: Needling and Moxibustion, Lou Ying, 1565 · 卷之八·陰陽臟腑部 · 穴法下 · Source: jicheng.tw ↗

維道二穴,在章門下五寸三分,足少陽帶脈之會。 針入八分,灸五壯

According to this text, GB28 lies 5.3 cun below Zhangmen and is a meeting point of the foot Shaoyang and the Dai vessel. Needling is 8 fen, with 5 moxa cones.

《針灸逢源》 Zhēnjiǔ Féngyuán — Sources of Acupuncture & Moxibustion, Li Xuechuan, 1815 · 卷四 · 經穴考正 · 足少陽膽經穴考 · Source: jicheng.tw ↗

維道(一名外樞) 在章門下五寸三分。 (當臍下三寸三分。 旁開六寸)足少陽帶脈之會。 (針八分。 灸三壯)治嘔逆不嗜食

According to this text, GB28 (also called Waishu) lies 5.3 cun below Zhangmen, 3.3 cun below the navel and 6 cun lateral, needled 8 fen with 3 moxa cones. The text records that it was used for vomiting counterflow and lack of appetite.

《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之五·紛署集 · 季脅凡十二穴第三十五 · Source: jicheng.tw ↗

維道二穴,主嘔逆不止,三焦不調,水腫,不嗜食

The text records that GB28 was used for unceasing vomiting counterflow, disharmony of the triple burner, water swelling and lack of appetite.

《針灸甲乙經》 Zhēnjiǔ Jiǎyǐ Jīng — Systematic Classic of Acupuncture & Moxibustion, c. 256–282 · 卷09 · Source: Wikisource ↗

咳逆不止,三焦有水氣,不能食,維道主之

The text records that GB28 was used for unceasing cough with counterflow, water qi in the triple burner, and inability to eat.

On the Gallbladder Channel channel

GB28 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:

Frequently asked questions

Where is GB28 located?

GB28 (Weidao) is located on the lateral abdomen, 5.3 cun inferior to Zhangmen (LR13) and anterior and inferior to the anterior superior iliac spine (ASIS). This places it approximately 0.5 cun anterior and inferior to Wushu (GB27).

What is GB28 used for?

GB28 regulates the Dai Mai, resolves dampness, descends rebellious Qi, and harmonizes the Sanjiao. Common clinical indications include incessant rebellious vomiting, water swelling (edema), Sanjiao disharmony, no desire to eat, incessant rebellious cough, water qi in the Sanjiao, inability to eat, abdominal fullness, waist feels like sitting in water.

How is GB28 needled?

Perpendicular insertion, 0.8 to 1.5 cun.

Which meridian is GB28 on?

GB28 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).

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⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.