Foot cramps occur in men generally have to consider the following situations: 1, a lot of sports during the day: the foot muscle strain occurs, so spasmodic pain in the muscles will occur, that is, foot cramps; 2, calcium deficiency: calcium ions can inhibit the excitability of neuromuscular junctions, when the lack of calcium when neuromuscular excitability will be increased, and therefore often appear spasmodic pain in the foot calf, especially at night Foot cramps and calf cramps will occur. At this time, we should go to the hospital to test the blood calcium level, and if it is clear that the blood calcium is lowered, we should use calcium gluconate drip to raise the blood calcium level, and at the same time, take calcium carbonate granules and active vitamin D3 tablets to replenish calcium.