Cramps may be caused by over-fatigue, cold, lack of calcium, etc. The specific treatment needs to be chosen according to the cause. 1. Excessive fatigue: Due to prolonged walking, standing, long-distance traveling and other reasons, the calf muscles may be overly fatigued, causing muscle spasms. Under normal circumstances, no special treatment, after rest can be relieved, more serious cases, can be localized hot compresses, massage, etc., but also the use of aspirin enteric-coated tablets, acetaminophen tablets and other drugs for treatment. 2. Cold: If you do not do a good job in cold weather warm measures, swimming water temperature is low and other factors stimulate the muscles, it will cause cramps, you should do a good job of warm measures, local massage can relieve the symptoms. 3. Calcium deficiency: When there is a lack of calcium ions needed in the body, the muscle tissues will be abnormally excited, which will cause the symptoms of cramps. You can eat more calcium-rich foods, such as milk, beans, eggs, shrimp, etc. You can also take oral calcium gluconate oral solution, calcium tablets and other drugs for treatment. It is recommended to go to the hospital in time for examination, and after clarifying the cause of the disease, targeted treatment, do not blindly self-medication.