Clinically, cramps occur in the elderly. The cause is due to the degeneration, hyperplasia and aging of the bones of the elderly, resulting in calcium loss in the bones, local muscle nutrition and metabolism disorders, resulting in pain, cramps and other phenomena. When cramps occur, the elderly can be instructed to take oral calcium supplements and vitamin D. In addition, in order to prevent the loss of calcium from the bones, the elderly can be instructed to carry out appropriate meaningful exercise, which can strengthen the local muscle strength and increase the stability of the joints. In addition, the elderly can also be instructed to sunbathe more, or eat more calcium-rich foods, such as shellfish, or dairy products, soy products, etc., can effectively replenish the calcium in the bones, which can relieve the phenomenon of cramps.