Who is this article for?

This article is for readers who want a practical, beginner-friendly understanding of this TCM topic.

Can this article replace professional medical advice?

No. This content is educational only and should not replace diagnosis or treatment from a qualified healthcare professional.

Zusanli (ST36): The Longevity Point — Acupoint Guide

Zusanli: The Most Important Acupoint for Health and Longevity

Among the hundreds of acupuncture points in clinical use, Zusanli (足三里, ST36) is one of the best-known points associated with vitality and digestive support. It is often called the “Longevity Point” in Traditional Chinese Medicine.

The name Zusanli literally means “Leg Three Miles” (足 = foot, 三 = three, 里 = mile). According to tradition, stimulating this point can restore enough energy for a person to walk another three miles even when exhausted.

Location: How to Find Zusanli

Zusanli is located on the lower leg, on the Stomach Meridian of Foot-Yangming (足阳明胃经):

Sit with your knee bent at about 90 degrees
Find the depression below the kneecap (the “eye of the knee,” known as Dubi ST35 or Xiyan)
Measure 3 cun (about four finger-widths) directly below this point
Move one finger-breadth lateral (toward the outside of the leg) from the anterior crest of the tibia (shinbone)
You should feel a slight depression — this is Zusanli

A helpful tip: When you press the correct spot, you may feel soreness or ache (得气, “deqi” sensation), sometimes with mild radiating sensation.

Precise Anatomical Description

Landmark	Description
Meridian	Stomach Meridian of Foot-Yangming
Location	3 cun below Dubi (ST35), one finger-breadth lateral to the anterior crest of the tibia
Depth	1–2 cun (needle insertion depth for acupuncture)
Bilateral	Present on both legs

Functions of Zusanli

Zusanli is classified as the He-Sea point (合穴) of the Stomach Meridian and the Lower He-Sea point (下合穴) of the Stomach. Its primary functions include:

Tonifying Spleen and Stomach

As the He-Sea point of the Stomach meridian, Zusanli directly strengthens the digestive system. The Spleen and Stomach are regarded in TCM as the “Postnatal Foundation” (后天之本) — the source of Qi and Blood production. When Spleen and Stomach function well, the entire body is nourished.

Supporting Qi and Blood

Zusanli is widely used for tonifying Qi (补气) and nourishing Blood (养血). It is commonly used for:

General fatigue and weakness
Poor appetite and digestive weakness
Pale complexion and fatigue patterns that may relate to deficiency
Recovery from illness or surgery

Strengthening the Body and Boosting Immunity

Regular stimulation of Zusanli is traditionally described as supporting defensive Qi (卫气). Some modern studies suggest that acupuncture at ST36 may modulate immune and inflammatory pathways.

Calming the Spirit

Zusanli also has a calming effect on the Shen (spirit), helping to ease anxiety, insomnia, and restlessness that stem from Spleen and Stomach deficiency.

Clinical Applications

Digestive Disorders

Zusanli is frequently selected for digestive complaints in TCM practice:

Nausea and vomiting — harmonizes Stomach Qi and directs it downward
Abdominal pain and distension — promotes Qi circulation
Diarrhea and loose stools — strengthens Spleen’s transforming function
Constipation — promotes intestinal motility
Upper abdominal discomfort — often used in supportive care plans
Poor appetite — awakens the Spleen’s transport function

Fatigue and Weakness

For chronic fatigue, post-illness weakness, or general debility:

Combines well with Qihai (CV6) and Guanyuan (CV4) for profound Qi tonification
Useful for Qi deficiency patterns with shortness of breath and reluctance to speak

Immune Support

Frequent colds and infections
Allergic conditions
Autoimmune disorders (as an adjunct therapy)

Pain Management

Knee pain — local point for joint disorders
Lower leg pain and cramps — promotes local Qi and Blood circulation
Headaches (frontal, related to Stomach meridian pathway)

Longevity and Preventive Care

In classical TCM, regular moxibustion on Zusanli is described as an important preventive health practice.

Acupressure: Self-Care Technique

You do not need to be an acupuncturist to explore Zusanli. Acupressure may be used as a self-care method for mild, non-urgent situations:

Step-by-Step Method

Find the point using the location guide above
Apply firm, steady pressure using your thumb or middle finger
Press deeply until you feel a dull ache or soreness (the deqi sensation)
Maintain pressure for 1–3 minutes on each leg
Use circular motions — small clockwise circles can enhance the effect
Repeat daily, preferably in the morning or before meals

Frequency and Duration

Goal	Frequency	Duration per point
General wellness	Daily	1–2 minutes
Digestive issues	2–3 times daily	2–3 minutes
Fatigue recovery	Morning and evening	3–5 minutes
Immune support	Daily in autumn/winter	2–3 minutes

Moxibustion on Zusanli: The Ancient Longevity Practice

Moxibustion (艾灸) on Zusanli is one of the most time-honored health practices in TCM. The burning of mugwort (艾叶) over the point provides deep warming and tonification.

The Famous Saying

“若要安，三里常不干” — “If you want peace and health, Zusanli should never be dry [from moxibustion]”

This proverb, attributed to the Song Dynasty, reflects the traditional view that regular moxibustion on Zusanli supports long-term health maintenance. The “not dry” refers to historical moxibustion practice context.

How to Perform Moxibustion on Zusanli

Moxa stick method: Light a moxa stick and hold it 2–3 cm above the point, moving it in small circles
Duration: 10–15 minutes per point, until the skin becomes pleasantly warm and slightly red
Frequency: Daily or every other day for preventive care
Best seasons: Autumn and winter (when Yang Qi tends to decline)

Benefits of Moxibustion on ST36

Warms and tonifies Spleen and Stomach Yang
Strengthens defensive Qi
Improves digestion and absorption
Supports longevity and healthy aging
Relieves cold-type pain and stiffness

Precautions

While Zusanli is generally considered low risk in routine use, keep these precautions in mind:

Pregnancy: Use caution — while not absolutely contraindicated, strong stimulation should be avoided during pregnancy
Over-stimulation: Excessive moxibustion or pressure can cause local irritation or burns
Bleeding disorders: Avoid acupuncture if you have a bleeding disorder; acupressure is safer
Open wounds: Do not apply moxibustion or pressure over broken skin
After meals: Wait at least 30 minutes after eating before stimulating Zusanli
Severe conditions: Zusanli is a supportive point — do not rely on it alone for serious medical conditions

Zusanli in Combination with Other Points

Zusanli is rarely used in isolation. Common pairings include:

Combination	Purpose
ST36 + CV6 (Qihai)	Powerful Qi tonification
ST36 + CV12 (Zhongwan)	Digestive weakness
ST36 + SP6 (Sanyinjiao)	Qi and Blood tonification
ST36 + LI4 (Hegu)	General immune support
ST36 + GB34 (Yanglingquan)	Knee and leg pain
ST36 + CV4 (Guanyuan)	Deep constitutional strengthening

Key Takeaways

Zusanli (ST36) is a widely used point for health maintenance in TCM
It tonifies Spleen and Stomach — the body’s “Postnatal Foundation” of Qi and Blood
Commonly used in supportive care plans for digestive discomfort, fatigue patterns, immune support, and pain
Acupressure can be a simple self-care technique for many people when used cautiously
Moxibustion on Zusanli has been used for centuries as a longevity practice
The proverb “若要安，三里常不干” encapsulates its importance in preventive health

Disclaimer: This article is for educational purposes only. Acupuncture should only be performed by a licensed practitioner. If you have a medical condition, consult your healthcare provider before beginning any new health practice.

References

World Health Organization. (n.d.). Traditional, Complementary and Integrative Medicine. WHO. https://www.who.int/health-topics/traditional-complementary-and-integrative-medicine. Accessed 2026-04-15.
National Center for Complementary and Integrative Health. (2022). Acupuncture: What You Need To Know. NCCIH. https://www.nccih.nih.gov/health/acupuncture-what-you-need-to-know. Accessed 2026-04-15.
Zijlstra, F. J., van den Berg-de Lange, I., Huygen, F. J. P. M., & Klein, J. (2003). Anti-inflammatory actions of acupuncture. Mediators of Inflammation, 12(2), 59-69. https://pubmed.ncbi.nlm.nih.gov/12775355/. Accessed 2026-04-15.