Chengshan point has the functions of relaxing bowels, clearing away heat and promoting diuresis, which is helpful to prevent and relieve constipation and hemorrhoids.

The method of acupoint selection should be prone position. Chengshan point is located in the middle of the posterior leg, between Weizhong point and Kunlun point. When the calf is straight or the heel is lifted, the sharp angle depression under the gastrocnemius muscle is.

The patient holds the "Chengshan point" in the middle of calf gastrocnemius with both hands. Press the acupoints vertically on the thumb pulp from light to heavy, first soft and then hard, first shallow and then deep, when the patient feels obvious local pain. At the same time, stretch the ankle backwards as hard as possible, press it for 2 ~ 3 minutes, and then gently massage it to relax the part. Massage repeatedly for 2 ~ 3 times 1 ~ 2 times a day.