The reasons for the symptoms of hamstring pain are as follows: 1, may be due to rheumatism, rheumatoid arthritis or lumbar intervertebral disc herniation, mainly due to the peripheral nerves are stimulated by the production of radiating pain, or in the muscles, joints, inflammation and lead to the production of the relevant. 2, may be due to poor posture, such as prolonged curling up on the bed or prolonged seated, so that the crotch a certain 3, may be caused by excessive fatigue, such as the patient for the lower limbs and hip joints to do excessive fitness exercise, or backpacking heavy climbing, may cause the muscles around the hips to excessive fatigue, which in turn produces the symptoms of leg and hip tendon pain. 4, may be due to the cold caused by the legs and hips hip joints around the persistent cold, it may cause the leg and hip tendon pain. 4, may be caused by cold, if the hip joint around the leg and hip continued to be cold, may cause muscle spasm, and then make the patient feel the symptoms of tendon pain. 5, may be due to trauma, violence, for this part, the most common is the hip joint around the pulling, twisting and other violent injuries, resulting in the leg and hip muscles, tendons, strains, the tendon will appear for the symptoms of tendon pain.