The exact location of Cheng Shan point is in the posterior region of the calf, at the angle where the two muscle bellies of the gastrocnemius muscle meet the tendon. Chengshan point has the function of transporting water and dampness, curing spleen and earth, and can be used clinically to treat a wide range of conditions such as lumbar and leg constriction (spasm and convulsion of the body due to the feeling of wind and cold), pain, constipation, hemorrhoids, abdominal pain, hernia, and so on. Chengshan point is widely used in the clinic, so it is especially important to master the localization method of this point. Chengshan acupoint is relatively simple, the examinee is asked to take the prone position or lateral position, take the midpoint of the popliteal transverse stripe and the midpoint of the ankle tip of the line, there is a feeling of soreness and swelling when pressed, this depression is the location of the Chengshan acupoint. Chengshan point in the choice of acupuncture method of treatment of disease, must be under the guidance of a professional acupuncturist, not blindly operate on their own.