BL36 (Chengfu, “Receiving Support”) is an acupuncture point on the Bladder Meridian. It is located on the posterior thigh, in the center of the transverse gluteal crease, inferior to the buttock. It strengthens the lumbar region and legs, resolves hemorrhoids, regulates urination and defecation.
On the posterior thigh, in the center of the transverse gluteal crease, inferior to the buttock.
Perpendicular insertion, 1.5 to 2.5 cun. Caution should be exercised to avoid the sciatic nerve, which lies deep and slightly medial to the point.
Strengthens the lumbar region and legs, resolves hemorrhoids, regulates urination and defecation.
Hemorrhoids, chronic hemorrhoids with swelling of the buttocks, difficult defecation, difficult urination, pain from hemorrhoids, axillary swelling, fresh bleeding from hemorrhoids, cold in the uterus/bladder, swelling in the buttock region.
Chengfu is a primary distal point for treating all types of hemorrhoids, especially when characterized by pain, swelling, and bleeding. Its location at the gluteal fold also makes it a key local point for sciatic pain radiating down the posterior leg and for weakness or motor impairment of the lower limb. The classical texts emphasize its role in addressing disorders of the anus and urination, linking the lower orifice to the Bladder channel's pathway.
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 ↗
承扶二穴，在尻臀下股陰上約文中。 針入二分，灸三壯It is located in the crease below the buttock at the top of the inner thigh, according to this text; BL36 is needled 2 fen with 3 moxa cones.
《針灸大成》 Zhēnjiǔ Dàchéng — Great Compendium of Acupuncture & Moxibustion, 1601 · 卷八 · Source: Wikisource ↗
尻臀下，陰股上紋中。 又曰：臀下陷紋中。 銅人針七分，灸三壯。 主腰脊相引如解，久痔，尻臀腫，大便難According to this text, BL36 lies in the crease below the buttock at the top of the thigh, also described as the depressed crease under the buttock; the Tongren gives needling 7 fen and 3 moxa cones. It records use for lumbar and spinal pain as if coming apart, chronic haemorrhoids, swelling of the buttocks and difficult defecation.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之五·紛署集 · 足太陽及股並陽蹻六穴凡三十六穴第三十四 · Source: jicheng.tw ↗
承扶二穴，主腰脊尻股引痛，五痔泄血，大小便難，尻臀癰腫The text records that BL36 was used for pulling pain of the lumbar spine, buttocks and thighs, the five kinds of haemorrhoids with bleeding, difficult urination and defecation, and abscesses and swelling of the buttocks.
BL36 is one of 67 points on the Bladder Meridian. Nearby points:
BL36 (Chengfu) is located on the posterior thigh, in the center of the transverse gluteal crease, inferior to the buttock.
BL36 strengthens the lumbar region and legs, resolves hemorrhoids, regulates urination and defecation. Common clinical indications include hemorrhoids, chronic hemorrhoids with swelling of the buttocks, difficult defecation, difficult urination, pain from hemorrhoids, axillary swelling, fresh bleeding from hemorrhoids, cold in the uterus/bladder, swelling in the buttock region.
Perpendicular insertion, 1.5 to 2.5 cun. Caution should be exercised to avoid the sciatic nerve, which lies deep and slightly medial to the point.
BL36 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).