GB31 (Fengshi, “Fengshi”) is an acupuncture point on the Gallbladder Channel Meridian. It is located on the lateral aspect of the thigh. To locate, have the patient stand erect with their arms hanging naturally at their sides. The point is found in a depression directly under the tip of the middle finger, on the midline of the outer thigh. It expels Wind, resolves Dampness, soothes the sinews and channels, alleviates pain and numbness.
On the lateral aspect of the thigh. To locate, have the patient stand erect with their arms hanging naturally at their sides. The point is found in a depression directly under the tip of the middle finger, on the midline of the outer thigh.
Perpendicular insertion 1.0 to 2.0 cun, or oblique insertion directed inferiorly.
Expels Wind, resolves Dampness, soothes the sinews and channels, alleviates pain and numbness.
Cold Bi-syndrome, leg and shin numbness, thigh and knee soreness and pain, heaviness in the lower back and buttocks, difficulty rising from a seated position, flaccidity and paralysis (wei bi), coldness and lack of sensation in the intestines, pain in the lower leg, knee contracture and pain, pain in the hypochondriac region, skin conditions with itching, hemiplegia, foot weakness, foot pain, foot numbness, foot coldness, foot heat, leg qi (beriberi), difficulty walking.
Fengshi is a key point for treating disorders of the lower limb, especially those characterized by pain, weakness, numbness, or paralysis along the Gallbladder channel. Its name, 'Wind Market,' highlights its efficacy in dispelling pathogenic wind, making it essential for treating hemiplegia, post-stroke sequelae, and various Bi (obstruction) syndromes affecting the leg. The classical emphasis on heavy moxibustion for leg weakness (Jiao Qi) underscores its tonifying and warming action on the channels to restore motor function.
Classical text; the translation was prepared with AI and is not clinical advice.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之六·兼羅集 · 腿膝無力難以移步二十 · Source: jicheng.tw ↗
風市，穴在膝外廉上七寸，垂手點到處是穴。 針入二寸半，先瀉後補，多補少瀉，灸三七壯According to this text, GB31 lies 7 cun above the outer edge of the knee, where the fingertip reaches with the arm hanging down. Needling is 2.5 cun, first reducing then tonifying (more tonifying than reducing), with 21 moxa cones.
《神灸經綸》 Shénjiǔ Jīnglún — Principles of Divine Moxibustion, Wu Yiding, 1851 · 卷之四 · 手足症治 · Source: jicheng.tw ↗
風市 此穴在膝上七寸外側兩筋間 又法令正身平立直隨兩手著腿當中指頭盡處陷中是穴（灸三五壯）According to this text, GB31 lies 7 cun above the knee on the outer side between two sinews; another method is to stand upright with the hands along the thighs, the point being in the depression at the tip of the middle finger. It gives 3 to 5 moxa cones.
《醫學入門》 Yīxué Rùmén — Introduction to Medicine, Li Chan, 1575 · 经穴起止 · Source: Wikisource ↗
风市膝上外廉两筋中，以两手着腿，中指尽处是穴。 针五分，灸五壮，主疠风疮According to this text, GB31 lies above the knee on the outer edge between two sinews, where the middle finger ends with both hands along the thighs; needled 5 fen with 5 moxa cones. It records use for sores of li-feng (pestilential wind).
《黃帝明堂灸經》 Huángdì Míngtáng Jiǔjīng — The Yellow Emperor's Bright Hall Moxibustion Classic, Tang · 卷中 · 側人形第七 · Source: jicheng.tw ↗
風市 二穴，在膝外兩筋間，乎立舒下兩手著腿當中，指頭陷者宛宛中，灸三壯。 主冷痹腳脛麻，腿膝痠痛，腰尻重，起坐難也According to this text, GB31 lies between two sinews on the outer side above the knee, in the hollow at the fingertip when standing with the hands along the thighs, with 3 moxa cones. It records use for cold bi with numb shins, aching legs and knees, heaviness of the lower back and buttocks, and difficulty getting up and sitting down.
GB31 is one of 44 points on the Gallbladder Channel Meridian. Nearby points:
GB31 (Fengshi) is located on the lateral aspect of the thigh. To locate, have the patient stand erect with their arms hanging naturally at their sides. The point is found in a depression directly under the tip of the middle finger, on the midline of the outer thigh.
GB31 expels Wind, resolves Dampness, soothes the sinews and channels, alleviates pain and numbness. Common clinical indications include cold Bi-syndrome, leg and shin numbness, thigh and knee soreness and pain, heaviness in the lower back and buttocks, difficulty rising from a seated position, flaccidity and paralysis (wei bi), coldness and lack of sensation in the intestines, pain in the lower leg, knee contracture and pain, pain in the hypochondriac region, skin conditions with itching, hemiplegia, foot weakness, foot pain, foot numbness, foot coldness, foot heat, leg qi (beriberi), difficulty walking.
Perpendicular insertion 1.0 to 2.0 cun, or oblique insertion directed inferiorly.
GB31 is a point on the Gallbladder Channel Meridian (Zú Shàoyáng Dǎnjīng).