There are many causes of frequent calf cramps, the most common are the following: 1. If the patient is deficient in calcium, it can cause leg cramps in the patient. For such patients, it is necessary to actively supplement calcium. 2. If the patient exercises strenuously or has recently overworked, local muscle spasms can occur, causing leg cramps. For such patients, it is necessary to reduce the amount of exercise and pay attention to rest for protection. 3. If stimulated by cold, for example, in winter environment, the patient gets cold or stimulated by cold water, it can also cause leg cramps. For such patients, it is best to stay away from the cold environment, and local hot compresses can be effectively avoided.