The following measures can be taken to deal with leg cramps in a 15-year-old child: 1. In the case of cramps, the first step is to take a stretch to relieve the muscle spasm. If it is a calf cramp, then the spasm can be relieved by straightening the knee joint, then hooking the toe and using the hand to pull the toe so that the dorsum of the foot is excessively dorsalized.2. After the spasm is relieved, the patient should take rest in the near future and pay attention to keeping the lower limbs warm.3. The patient needs to take medications that supplement calcium preparations, such as Diclo. In addition, the patient also needs to pay attention to eating more fish, milk, eggs, lean meat and other foods. 4, it is recommended that the patient should do sufficient physical exercise after the symptoms are relieved. For example, patients can practice flat road jogging, and afterwards practice stretching exercises such as yoga. 5, patients after the above treatment is still no significant relief, or continued recurrent attacks, must promptly go to the orthopedic clinic to clarify the cause, and then do targeted treatment.