There are many reasons for calf muscle cramps, some will be due to muscle cramps after strenuous exercise, some because of poor blood circulation in the local muscle tissue after catching cold, and low blood calcium, all these factors can lead to calf muscle cramps. To often exercise, so that the strength of the muscle gradually increase, can adapt to fatigue, usually before exercise to do a good warm-up activities, stretching muscles, stretching muscles, autumn and winter night sleep to pay attention to the leg insulation. Avoid the legs exposed to the outside and get cold, the elderly osteoporosis serious to timely calcium supplementation, more sunshine, if the blood calcium decreased to intravenous calcium supplementation, regular bone density and blood ion check, should be timely.