The main causes of hamstring pain are related to soft tissue inflammation, trauma, overwork or calcium deficiency. 1. Inflammation of soft tissues: If inflammation occurs in the area of the hamstring, such as tenosynovitis or fasciitis, the stimulation of inflammation will easily cause localized pain and even swelling. 2. Trauma: in the process of ordinary sports, if the force is too much or the hamstring is hit by foreign objects, it is easy to produce local pain, and when it is serious, it can affect the function of sports. 3. Excessive exertion: If you carry weight for a long time or exercise strenuously, it is possible to produce muscle strain in the foot area, which causes excessive lactic acid secretion, leading to symptoms of pain in the hamstring. 4. Calcium deficiency: the body if the intake of calcium is insufficient or calcium loss is too much, it is easy to trigger the problem of calcium deficiency, which affects the nerve signaling, there may be lower limb cramps, resulting in the performance of the foot gluten pain. If the symptoms of pain are more serious, you can go to the orthopedic department for examination, to clarify the cause of the disease, and standardized treatment under the guidance of professional physicians, to prevent the later generation of motor dysfunction.