The leg tightness described by the patient, if it is muscle contraction can be caused by exertion and cold, because the leg muscles are mainly gastrocnemius, this muscle if tightness is caused by muscle contraction, can be relieved by hot compresses as well as localized pressure, massage to relieve the symptoms, the muscle will be gradually loosened. If the tightness of the legs described by the patient is a cramp, which occurs only once in a while, and the symptoms last for several 10S and are relieved, during which there can be severe pain and soreness, it can be diagnosed as a cramp, which is caused by the lack of oxygen in the muscles and tendons, and can be caused by the cold, cold, lack of calcium and overexertion, and can lead to such clinical manifestations, the patient can choose to supplement calcium, pay attention to warmth, and the symptoms will be relieved.