SI17 Tianrong

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

SI17 (Tianrong, “Tianrong”) is the Window of Heaven point of the Small Intestine Channel Meridian. It is located on the side of the neck, in the depression posterior to the angle of the mandible and anterior to the sternocleidomastoid muscle. It descends rebellious Qi, benefits the throat and ears, clears heat, and reduces swelling.

Location

On the side of the neck, in the depression posterior to the angle of the mandible and anterior to the sternocleidomastoid muscle.

Needling

Perpendicular or slightly posterior insertion 0.5 to 1.0 cun, avoiding the external jugular vein and carotid artery.

TCM functions

Descends rebellious Qi, benefits the throat and ears, clears heat, and reduces swelling.

Indications

Deafness, ear ringing like cicadas, chest fullness, inability to breathe, cough with rebellious Qi, vomiting foam, goiter, neck carbuncles, inability to turn the head, inability to speak, chest pain, tooth lockjaw, head and neck carbuncles and swelling, cold and heat sensations, hernia and accumulations in the chest with pain that prevents bending.

Window of Heaven

Clinical notes

Tianrong is a key point for descending rebellious Qi from the head and chest, making it effective for severe asthma, wheezing, and chest fullness. Its location also makes it a primary local point for disorders of the neck, throat, and ear, such as goiter, swollen glands, sore throat, and deafness. The Neijing specifically recommends it for 'Yang Qi grand counterflow' filling the chest, with shortness of breath and aversion to dust and smoke.

In the classical sources

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 · 卷之五·紛署集 · 頸凡十七穴第十二 · Source: jicheng.tw ↗

天容二穴,主喉痹寒熱,咽中如梗,項癭項癰,不可回顧,胸中痛滿不得息,嘔逆吐沫,齒噤,耳鳴及聾

The text records that SI17 was used for throat bi with cold and heat, a feeling of obstruction in the throat, goitre and abscess of the neck, inability to turn the head, fullness and pain in the chest with difficult breathing, retching with frothy vomit, clenched jaw, tinnitus and deafness.

《醫學入門》 Yīxué Rùmén — Introduction to Medicine, Li Chan, 1575 · 经穴起止 · Source: Wikisource ↗

天容耳下颊车后陷中。 灸三壮。 主喉痹,颈肿项痛,耳鸣,咳喘寒热

According to this text, SI17 lies below the ear, in the depression behind Jiache (ST6), with 3 moxa cones; it was used for throat bi, swelling of the neck and pain of the nape, tinnitus, cough and wheezing with cold and heat.

《類經圖翼》 Lèijīng Túyì — Illustrated Wings to the Classified Canon, Zhang Jiebin, 1624 · 卷六 · 經絡(四) · 手太陽小腸經穴 · Source: jicheng.tw ↗

天容 在耳下曲頰後。 刺一分,灸三壯。 主治癭氣頸癰,不可回顧,不能言,齒噤耳鳴耳聾,喉痹咽中如梗,寒熱胸滿,嘔逆吐沫

According to this text, SI17 lies below the ear behind the angle of the jaw; needle 0.1 cun, moxibustion 3 cones. It was used for goitre and neck abscess, inability to turn the head or speak, clenched jaw, tinnitus and deafness, throat bi with a feeling of obstruction, cold and heat with chest fullness, and retching with frothy vomit.

On the Small Intestine Channel channel

SI17 is one of 19 points on the Small Intestine Channel Meridian. Nearby points:

Frequently asked questions

Where is SI17 located?

SI17 (Tianrong) is located on the side of the neck, in the depression posterior to the angle of the mandible and anterior to the sternocleidomastoid muscle.

What is SI17 used for?

SI17 descends rebellious Qi, benefits the throat and ears, clears heat, and reduces swelling. Common clinical indications include deafness, ear ringing like cicadas, chest fullness, inability to breathe, cough with rebellious Qi, vomiting foam, goiter, neck carbuncles, inability to turn the head, inability to speak, chest pain, tooth lockjaw, head and neck carbuncles and swelling, cold and heat sensations, hernia and accumulations in the chest with pain that prevents bending.

How is SI17 needled?

Perpendicular or slightly posterior insertion 0.5 to 1.0 cun, avoiding the external jugular vein and carotid artery.

Which meridian is SI17 on?

SI17 is a point on the Small Intestine Channel Meridian (Shǒu Tài Yáng Xiǎo Cháng Jīng).

Interactive body mapConditions & evidenceFind an acupuncturistTCM glossary
⚠️ This page is for general education and is not medical advice. Acupuncture is a traditional practice; evidence varies by condition and study quality, and individual results differ. It does not replace diagnosis or treatment by a licensed professional. Always consult a qualified acupuncturist or physician.