LI2 (Èr Jiān, “Èr Jiān”) is the Ying-Spring Point point of the Large Intestine Meridian. It is located on the radial side of the index finger, in the depression just distal to the metacarpophalangeal joint, found when the fist is loosely made. It clears heat, reduces swelling, alleviates pain, benefits the throat and teeth.
On the radial side of the index finger, in the depression just distal to the metacarpophalangeal joint, found when the fist is loosely made.
Perpendicular or oblique insertion directed proximally, 0.3-0.5 cun.
Clears heat, reduces swelling, alleviates pain, benefits the throat and teeth.
Toothache, especially lower toothache, throat obstruction, swollen jaw, shoulder and back pain, chills and fever, nosebleed, fright, yellow eyes, dry mouth, facial deviation, difficulty eating, somnolence, heat disease with no sweating, sudden shaking, shoulder pain, blue-green facial complexion, sore throat, water retention in cases of febrile disease.
As the Ying-Spring and Water point of the Large Intestine channel, Erjian is excellent for clearing heat from the opposite end of the channel. It is a primary distal point for inflammatory conditions of the face, mouth, and throat, such as toothache, tonsillitis, and facial swelling. Its heat-clearing properties also make it useful for febrile diseases, especially when accompanied by a lack of sweating.
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 · 卷上 · 正人形第十四 · Source: jicheng.tw ↗
二間 二穴，在手大指次指本節前陷者中，灸三壯。 主喉痹咽腫，多臥喜睡，鼻鼽，及口眼斜According to this text, LI2 lies in the depression in front of the base joint of the index finger, with 3 moxa cones; it was used for throat obstruction and swelling, excessive sleepiness, nasal congestion with discharge, and deviation of mouth and eye.
《備急千金要方》 Bèijí Qiānjīn Yàofāng — Essential Prescriptions Worth a Thousand Gold for Emergencies, c. 650 · 第二 · Source: Wikisource ↗
妊娠八月，手陽明脈養，不可針灸其經（如商陽、二間、合谷、上下廉、三裡The text states that in the eighth month of pregnancy, when the hand yangming channel nourishes the fetus, its points, including LI2, must not be needled or moxibusted.
《鍼灸聚英》 Zhēnjiǔ Jùyīng — Gathering of Eminent Acupuncturists, Gao Wu, 1529 · Source: Wikisource ↗
穴在食指本節前內側陷中According to this text, LI2 lies in the depression on the inner side in front of the base joint of the index finger.
LI2 is one of 20 points on the Large Intestine Meridian. Nearby points:
LI2 (Èr Jiān) is located on the radial side of the index finger, in the depression just distal to the metacarpophalangeal joint, found when the fist is loosely made.
LI2 clears heat, reduces swelling, alleviates pain, benefits the throat and teeth. Common clinical indications include toothache, especially lower toothache, throat obstruction, swollen jaw, shoulder and back pain, chills and fever, nosebleed, fright, yellow eyes, dry mouth, facial deviation, difficulty eating, somnolence, heat disease with no sweating, sudden shaking, shoulder pain, blue-green facial complexion, sore throat, water retention in cases of febrile disease.
Perpendicular or oblique insertion directed proximally, 0.3-0.5 cun. Caution: One source (Zi Sheng Jing) notes a conflict regarding moxibustion on a nearby point (Tianfu) and suggests caution with moxibustion unless for a severe condition. While not directly about Erjian, it reflects a general classical caution. Another source (Qian Jin Yao Fang) advises against needling or moxibustion on the Hand Yangming channel during the eighth month of pregnancy.
LI2 is a point on the Large Intestine Meridian (Shǒu Yángmíng Dàcháng Jīng).