DU27 (Duiduan, “Extremity of the Mouth”) is an acupuncture point on the Governing Vessel Meridian. It is located on the midline of the face, at the superior tip of the upper lip, where the skin meets the vermilion border at the apex of the philtrum. It clears heat, calms the spirit, benefits the mouth and gums, and alleviates pain.
On the midline of the face, at the superior tip of the upper lip, where the skin meets the vermilion border at the apex of the philtrum.
Oblique insertion superiorly 0.2 to 0.3 cun, or prick to bleed.
Clears heat, calms the spirit, benefits the mouth and gums, and alleviates pain.
Lockjaw with chattering jaw, gum pain, upper toothache, lip tremor and stiffness, epilepsy with vomiting of foam, dry tongue, thirst , yellow urine, nosebleed, nasal congestion, convulsions, tetanus-like spasms with lip stiffness.
Duiduan is a local point primarily used for conditions of the mouth, lips, and gums, such as pain, swelling, and stiffness. Its classical indications for epilepsy and lockjaw highlight its function in calming internal wind and reviving consciousness, similar to its neighbors Renzhong (DU26) and Chengjiang (CV24). Clinically, it is effective for acute dental pain, especially of the upper incisors, and can be pricked to bleed for local heat conditions.
Classical text; the translation was prepared with AI and is not clinical advice.
《黃帝明堂灸經》 Huángdì Míngtáng Jiǔjīng — The Yellow Emperor's Bright Hall Moxibustion Classic, Tang · 卷中 · 側人形第五 · Source: jicheng.tw ↗
兌端 一穴，在頤前下唇之下宛宛中，開口取之。 灸三壯。 主口噤，鼓頷，癲疾及吐沫，衄血不止This text places DU27 in the small hollow in front of the chin below the lower lip, located with the mouth open, with 3 moxa cones; it records use for clenched jaw, chattering jaw, epilepsy with frothing, and unstoppable nosebleed.
《針灸逢源》 Zhēnjiǔ Féngyuán — Sources of Acupuncture & Moxibustion, Li Xuechuan, 1815 · 卷四 · 經穴考正 · 督脈穴考 · Source: jicheng.tw ↗
兌端 在上唇端手陽明脈氣所發。 （針二分。 灸三壯。 炷如麥大）治癲癇吐沫According to this text, DU27 lies at the tip of the upper lip, where the qi of the hand yangming vessel emerges; it gives needling 0.2 cun and 3 moxa cones the size of a wheat grain, and records use for epilepsy with frothing.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之五·紛署集 · 面部凡三十九穴第十 · Source: jicheng.tw ↗
兌端一穴，主唇吻強，四白瞤動，齒齦痛，鼻塞The text records that DU27 was used for stiffness of the lips and mouth corners, twitching around the eyes, gum pain and nasal blockage.
《類經圖翼》 Lèijīng Túyì — Illustrated Wings to the Classified Canon, Zhang Jiebin, 1624 · 卷八 · 經絡（六） · 督脈穴 · Source: jicheng.tw ↗
百證賦云：小便赤澀，兌端獨瀉太陽經Quoting the Baizheng fu, the text records that for red, rough urination, DU27 alone was drained to act on the taiyang channel.
DU27 is one of 28 points on the Governing Vessel Meridian. Nearby points:
DU27 (Duiduan) is located on the midline of the face, at the superior tip of the upper lip, where the skin meets the vermilion border at the apex of the philtrum.
DU27 clears heat, calms the spirit, benefits the mouth and gums, and alleviates pain. Common clinical indications include lockjaw with chattering jaw, gum pain, upper toothache, lip tremor and stiffness, epilepsy with vomiting of foam, dry tongue, thirst , yellow urine, nosebleed, nasal congestion, convulsions, tetanus-like spasms with lip stiffness.
Oblique insertion superiorly 0.2 to 0.3 cun, or prick to bleed.
DU27 is a point on the Governing Vessel Meridian (Dū Mài).