Cramps are muscle spasms that can last from a few seconds to tens of seconds. When muscle spasms in the hands and feet occur, the first consideration is whether they are caused by calcium deficiency, which can be relieved by moderate sun exposure and calcium supplementation. However, in addition to calcium deficiency, there are many reasons that can also cause this symptom, such as cold, excessive exercise, etc. After examination and analysis to clarify the cause, and then deal with the corresponding. I. Causes: 1, calcium deficiency: calcium ions have the role of regulating the degree of muscle excitement, so the body is in a state of calcium deficiency, muscle regulation will be abnormal, in the slightest external stimulus, hands and feet may appear muscle spasm; 2, cold: hands and feet in a cold environment, skeletal muscle will appear stress contraction, to produce more heat against the cold. But hands and feet in the cold blood vessels tend to contract, resulting in insufficient blood supply to the muscles, the two together can cause muscle spasms; 3, poor peripheral circulation: hands and feet belong to the body’s peripheral tissues, prone to poor blood flow. Under the influence of long-term poor blood circulation, muscle tissue nutrient deficiency, it is easy to appear the performance of muscle cramps in the hands and feet; 4, too much exercise: if the hands and feet in a long-term state of excessive exercise, muscle internal accumulation of lactic acid and other metabolic products, resulting in muscle fatigue, resulting in muscle cramps in the hands and feet. Second, measures: 1, sunshine: often appear in the hands and feet muscle spasm of the crowd, can be in the daily moderate amount of sunshine, help the body calcium absorption, will play a positive impact on the normal regulation of the muscle, reduce the occurrence of such symptoms; 2, pay attention to warmth: in cold weather, to do a good job of hands and feet and other end parts of the warmth measures, such as wearing gloves, wear thick socks, etc.; 3, hot compresses: can be warm water, hot water bags, etc. Hot water bags and other hot compresses for hands and feet to promote blood circulation at the end, the symptoms of muscle cramps in the hands and feet will be improved; 4, moderate exercise: moderate activity of hands and feet can promote blood circulation, speed up metabolism, to help improve the symptoms of muscle cramps, but the exercise should not be excessive; 5, calcium: for people lacking calcium can take calcium lactate, calcium gluconate and other calcium supplements orally under the guidance of a doctor. However, it should be noted that, in addition to the above common factors, muscle spasms in the hands and feet may also indicate the occurrence of diseases, such as arteriosclerosis, diabetes, etc.. In particular, elderly people who often experience muscle spasms in their hands and feet should be especially alert and seek medical attention if necessary.