The clinical causes of foot and calf cramps are as follows: 1, excessive exercise or maintaining the same posture for a long time, such as prolonged squatting, etc., can be properly massaged or activity down to relieve the symptoms; 2, cold, wind, when the calf and other parts of the muscle is cold stimulation, there may be cramps, this time you can carry out appropriate hot compresses; 3, the concentration of calcium ions in the blood is relatively low, there is Hypocalcemia, when the body is in a low calcium state, it will lead to local muscle involuntary twitching symptoms, which in turn may cause cramps, it is recommended that patients with calcium deficiency can be supplemented with calcium to relieve symptoms under the guidance of a doctor; 4, lack of magnesium in the body, if the patient is not obvious after treatment by calcium, you can go to the hospital to do further laboratory tests, some patients lack of magnesium in the body, will also The symptoms of cramps, if diagnosed after examination, can be supplemented with magnesium for conditioning under the guidance of a doctor.