Frequent leg cramps may be caused by physiological factors such as cold, fatigue, lack of calcium, etc., but also may be caused by vascular disease of the lower limbs, nerve compression and other disease factors, excluding physiological factors, need to consult a doctor in time. Often in the cold environment life, work, or leg exercise, it will make the leg muscles by external stimuli triggered contraction, the phenomenon of frequent leg cramps. Low calcium in middle-aged and elderly people occurs after the concentration of serum calcium ions decreased, causing muscle nerve excitability increased, legs will often cramp. Disease factors include lower extremity vascular disease, such as lower extremity arterial occlusive vasculitis, will cause ischemia of the lower extremities, leg muscles will be sore, spasm, that is, leg cramps. Nerve compression, such as lumbar degenerative diseases will compress the nerves innervating the legs, leg muscles due to nerve stimulation and induced spasm, pain. Frequent leg cramps may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.