GB38 Yang Assistance

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

GB38 (Yangfu, “Yang Assistance”) is the Jing-River point point of the Gallbladder Channel Meridian. It is located on the lateral aspect of the lower leg, 4 cun superior to the prominence of the lateral malleolus, on the anterior border of the fibula. It dispels wind-damp, soothes the sinews and invigorates the channel, alleviates pain, clears Gallbladder heat.

Location

On the lateral aspect of the lower leg, 4 cun superior to the prominence of the lateral malleolus, on the anterior border of the fibula.

Needling

Perpendicular insertion 0.5 to 1.0 cun, along the anterior border of the fibula.

TCM functions

Dispels wind-damp, soothes the sinews and invigorates the channel, alleviates pain, clears Gallbladder heat.

Indications

Neck scrofula, axillary swelling, scrofula with nodules (ma dao), throat obstruction, pain in the joints of the entire body, pain without a fixed location, migratory pain, hundred-joint sourness and pain, lumbar pain as if sitting in water, lumbar pain preventing turning the head, lumbar pain like a hammer in the center with swelling, pain on coughing with sinew contraction, cold and heat sensations, acid pain in the limbs, inability to raise the limbs, numbness and paralysis from wind-damp, coldness and numbness of the knee and lower leg, sinew cramps, knee and leg acid pain, leg weakness, hemiplegia, foot drop, pain in the chest and hypochondrium, bitter taste in the mouth, sighing, pain in the outer canthus, pain in the jaw, pain in the supraclavicular fossa, pain along the lateral aspect of the hypochondrium, thigh, knee, lower leg, fibula, and lateral malleolus, chills and fever, malaria,reversal cold of the limbs.

Jing-River pointFire point

Clinical notes

As the Jing-River and Fire point of the Gallbladder channel, Yangfu is excellent for clearing heat and resolving stagnation along the entire channel pathway. It is a key distal point for pain in the hips, lateral leg, and ankle, especially for conditions involving wind-damp, such as migratory joint pain (bi syndrome). Its ability to treat axillary and neck swelling (scrofula) demonstrates its action on clearing phlegm-heat from the channel. Clinically, it is frequently combined with GB34 (Yanglingquan) for sinew and joint problems of the lower limb and with points like GB41 (Zulinqi) for pain along the side of the body.

In the classical sources

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

《類經》 Lèijīng — Classified Canon, Zhang Jiebin, 1624 · 二十二卷·针刺类 · 四十九、刺腰痛 · Source: Wikisource ↗

肉里之脉令人腰痛,不可以咳,咳则筋急,(肉里,谓分肉之里,足少阳脉之所行,阳辅穴也,又名分肉

The text records that the vessel of the rouli causes lumbar pain such that one cannot cough, since coughing tenses the sinews; the commentary explains rouli as the inner part of the divided flesh along the foot Shaoyang, namely GB38, also called Fenrou.

《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之一·神照集 · 足少陽膽經圖穴十八 · 足少陽膽經所發四十四穴 · Source: jicheng.tw ↗

陽輔二穴,名分肉,火也。 在足外踝上四寸,輔骨前,絕骨端,如前三分,去丘墟七寸

According to this text, GB38, also called Fenrou, is a fire point, located 4 cun above the outer ankle in front of the fibula at the end of the 'severed bone', about 3 fen forward, and 7 cun from Qiuxu.

《普濟方·針灸門》 Pǔjì Fāng · Zhēnjiǔ Mén — Formulas for Universal Relief: Acupuncture & Moxibustion Section, Zhu Su, 1406 · 卷四百十六 · 針灸門 · 足少陽膽經左右三十穴 · Source: jicheng.tw ↗

陽輔二穴 火也。 在足外踝上四寸。 輔骨前絕骨端如前三分。 去丘墟七寸。 灸三壯。 針五分。 留七呼

According to this text, GB38 is a fire point 4 cun above the outer ankle, in front of the fibula at the end of the 'severed bone' about 3 fen forward, 7 cun from Qiuxu. It gives 3 moxa cones, needling 5 fen and retention for 7 breaths.

《扁鵲神應針灸玉龍經》 Biǎn Què Shényìng Zhēnjiǔ Yùlóng Jīng — Bian Que's Jade Dragon Classic of Divinely Responsive Acupuncture & Moxibustion, 1329 · 甲足少阳胆之经 · Source: Wikisource ↗

阳辅 为经火。 在外踝上四寸,辅骨前,绝骨端,如前三分,去丘墟七寸。 治胃弱减食,肠鸣腹胀,筋挛骨痛,足肿

According to this text, GB38 is the river (jing) fire point, located 4 cun above the outer ankle in front of the fibula at the end of the 'severed bone', 7 cun from Qiuxu. It records use for a weak stomach with reduced eating, borborygmus and abdominal distension, cramping sinews with bone pain, and swollen feet.

On the Gallbladder Channel channel

GB38 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:

Frequently asked questions

Where is GB38 located?

GB38 (Yangfu) is located on the lateral aspect of the lower leg, 4 cun superior to the prominence of the lateral malleolus, on the anterior border of the fibula.

What is GB38 used for?

GB38 dispels wind-damp, soothes the sinews and invigorates the channel, alleviates pain, clears Gallbladder heat. Common clinical indications include neck scrofula, axillary swelling, scrofula with nodules (ma dao), throat obstruction, pain in the joints of the entire body, pain without a fixed location, migratory pain, hundred-joint sourness and pain, lumbar pain as if sitting in water, lumbar pain preventing turning the head, lumbar pain like a hammer in the center with swelling, pain on coughing with sinew contraction, cold and heat sensations, acid pain in the limbs, inability to raise the limbs, numbness and paralysis from wind-damp, coldness and numbness of the knee and lower leg, sinew cramps, knee and leg acid pain, leg weakness, hemiplegia, foot drop, pain in the chest and hypochondrium, bitter taste in the mouth, sighing, pain in the outer canthus, pain in the jaw, pain in the supraclavicular fossa, pain along the lateral aspect of the hypochondrium, thigh, knee, lower leg, fibula, and lateral malleolus, chills and fever, malaria,reversal cold of the limbs.

How is GB38 needled?

Perpendicular insertion 0.5 to 1.0 cun, along the anterior border of the fibula.

Which meridian is GB38 on?

GB38 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).

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