The elderly should be instructed to pull their toes apart and repeat the action repeatedly after cramps; pay attention to the combination of work and rest in daily life and keep warm when the weather changes; they can take calcium tablets to supplement calcium elements; if the elderly have chronic diseases they need to be alert to atherosclerosis, if they have frequent cramps or if the cramps are difficult to be relieved after emergency treatment, they need to go to the hospital for examination in time.