There are more reasons for waking up from sleep with foot cramps, and the common reasons are as follows: First, middle-aged and elderly patients, especially middle-aged and elderly female patients are prone to osteoporosis after menopause, and osteoporosis occurs with lower limb cramps with pain in many parts of the body; Second, it may be that adolescent patients in the stage of rapid growth and development, calcium intake is not enough to easily lead to lower limb cramps; Third, young and middle-aged patients in the daytime to carry out a large The accumulation of lactic acid and other metabolic products in the muscles of the lower extremities after a large dose of exercise can easily lead to lower extremity cramps after sleep. Therefore, for different cramps, different approaches are taken. For middle-aged and elderly patients with osteoporosis and adolescents with the phenomenon of insufficient calcium intake, the intake of calcium should be increased appropriately. For muscle cramps in young and middle-aged patients after high-dose exercise, rest and local massage and physiotherapy are sufficient.