Muscle spasm is a kind of spontaneous forced contraction of muscles, which mostly occurs in the calf and toe muscles, and can be accompanied by pain. Each attack lasts for several seconds to several minutes. It can relieve itself after rest. If necessary, it needs medical treatment. The common causes are high fever, epilepsy, tetanus, rabies, hypocalcemia, etc. Long term intense activity can also lead to muscle spasm, The treatment method is mainly to take targeted measures according to the cause of disease. After active treatment, the symptoms of most patients will be significantly improved.