There are several common causes of hamstring pain for no reason, such as cold, exertion, strain, muscle spasm, strain or trauma. If it is cold, exertion, strain or muscle spasm, you need to rest mainly, pay attention to warmth, local hot compresses, at the same time can be combined with acupuncture, massage, infrared and other physiotherapy, but also oral anti-inflammatory analgesic or blood pain medication. If it is strained or traumatized, it is necessary to rest on the basis of early ice packs, and later appropriate hot packs, can also be combined with acupuncture, tuina and other physiotherapy, as well as oral medication and other symptomatic treatment. Most of the pain can be relieved after the above treatments, if not, you need to go to the hospital in time for consultation.