In general, under the operation of a professional physician, the Foot Sanli can be stabbed straight 1-2 inches. Specifically, the physician needs to be determined according to the patient’s specific situation (age, constitution, condition, etc.). For example, old and weak, weak qi and blood, and children should not be stabbed deeply; shallow stabbing is preferred for Yang evidence and new diseases, while deep stabbing is preferred for Yin evidence and long-standing diseases. If there is any discomfort, please stop needling immediately. The foot Sanli is on the lateral side of the lower leg, 3 inches below the calf’s nose (located in the anterior knee area, in the lateral depression of the patellar ligament), and on the line between the calf’s nose and Xiexi (located in the ankle area, in the central depression in front of the ankle joint, between the tendon of the extensor digitorum longus and the tendon of the extensor digitorum longus). The foot Sanli has the effects of strengthening the spleen and stomach, dredging and activating collaterals, expelling phlegm and calming the body, eliminating carbuncle and relieving pain, and strengthening health care. It is mainly used for treating stomach pain, vomiting, constipation, abdominal distension, edema, lower limb paralysis, epilepsy and other diseases. Foot Sanli can be used in conjunction with other acupoints to treat diseases. For example, foot-sanli can be used with zhongkou and liangqiu to treat stomach pain; with neiguan to treat vomiting; with qihai to treat abdominal distension; and with danzhong and milk root to treat carbuncle (a suppurative disease in which the breast is red, swollen, and painful, and the milk is not discharged properly). The operation of acupuncture is recommended to be operated by professional physicians, do not operate by yourself to avoid delaying the condition.