The common clinical causes of left forefoot pain may be the following: a. After excessive exercise, the patient causes pain due to muscle and ligament strains at the left forefoot. At this time, patients can reduce tissue exudation by applying local ice packs. 24 hours later, hot ointment packs or moxibustion strips are used for fumigation to promote the absorption of local inflammation. For patients with mild symptoms, the painful symptoms of the left metacarpal can be gradually relieved after 48 hours of injury. Second, diabetic patients because of the patient’s long-term poor blood sugar control, can cause self-occlusion of the left foot capillaries, and cause dry gangrene induced pain symptoms. At this time, patients due to severe local tissue ischemia and hypoxia can cause serious infection, and some patients need to be treated with amputation to avoid causing more serious systemic infections that endanger life.