Cramps after leg pain can be caused by a variety of reasons, such as cold, fatigue, over-exercise, calcium deficiency, high fever, etc. Whether the self-cure is related to the cause of the disease, the extent of the disease, and need to be analyzed in a specific problem. Cold, tiredness, excessive exercise and other factors caused by leg cramps, more common in life, the degree of muscle spasm is mild, usually can be self-healing, if a long time does not relieve, can be given hot compresses, local massage and other treatments. Calcium deficiency can also cause leg cramps, but need to be given calcium supplementation drugs, such as Calcium D, and more sunshine, eat more calcium-rich foods, such as milk, soy products, black sesame, and so on. In addition, high fever, epilepsy, tetanus, rabies, etc. can cause cramps, and the symptoms caused by these diseases are more serious, and need to be actively consulted and treated in general surgery or orthopedics and other related departments. It is recommended to pay attention to the combination of work and rest in daily life, appropriate aerobic exercise, which is beneficial to the body, but the exercise load should not be too large, otherwise it will bring counterproductive effects.