The relief of cramps in the back of the foot is as follows: 1, calcium supplementation: cramps in the back of the foot are mostly caused by calcium deficiency, so be sure to actively supplement calcium, you can take calcium carbonate granules and active vitamin D3 tablets, and at the same time to eat more high-calcium foods, such as soy, milk, dairy products, lean meat, such as beef, chicken breast, lamb, deep-sea fish, shrimp and shrimp, these foods are rich in calcium elements, you can actively 2, local treatment: when the dorsal foot cramps, you can carry out local dorsal foot pulling activities, which can also relieve cramps, while you can use hot towels local hot compresses, which can improve the blood circulation of the dorsal foot and relieve the degree of muscle spasm, therefore, can also relieve cramps.