BL15 Heart Shu

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

BL15 (Xīn Shū, “Heart Shu”) is the Back-Shu of Heart point of the Bladder Meridian. Located 1.5 cun lateral to the lower border of the fifth thoracic vertebra (T5), at the level of the fifth intercostal space. It nourishes Heart Blood and Yin, calms the spirit, and regulates Heart Qi.

Location

Located 1.5 cun lateral to the lower border of the fifth thoracic vertebra (T5), at the level of the fifth intercostal space.

Needling

Puncture obliquely 0.5-0.8 cun. Caution: Pneumothorax.

⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

TCM functions

Nourishes Heart Blood and Yin, calms the spirit, and regulates Heart Qi.

Indications

Palpitations, anxiety, insomnia, poor memory, chest pain, epilepsy.

Back-Shu of Heart

Clinical notes

BL15, the Back-Shu point of the Heart, is the most significant point for nourishing Heart Blood and Yin, calming the spirit, and regulating Heart Qi. It is essential for treating a wide range of Heart conditions, including palpitations, insomnia, anxiety, poor memory, and dream-disturbed sleep. It is often paired with HT7 to powerfully calm the Shen and nourish the Heart.

On the Bladder channel

BL15 is one of 67 points on the Bladder Meridian. Nearby points:

Frequently asked questions

Where is BL15 located?

Located 1.5 cun lateral to the lower border of the fifth thoracic vertebra (T5), at the level of the fifth intercostal space.

What is BL15 used for?

BL15 nourishes Heart Blood and Yin, calms the spirit, and regulates Heart Qi. Common clinical indications include palpitations, anxiety, insomnia, poor memory, chest pain, epilepsy.

How is BL15 needled?

Puncture obliquely 0.5-0.8 cun. Caution: Pneumothorax. Caution: ⚠ Pneumothorax risk: oblique/shallow only, never deep perpendicular over the chest wall.

Which meridian is BL15 on?

BL15 is a point on the Bladder Meridian (Zú Tài Yáng Páng Guāng Jīng).

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⚠️ 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.