The phenomenon of cramps in the middle of the night in bed, this situation may be caused by many diseases: 1. Due to the lack of calcium ions in the body, if the lack of calcium there may be cramps in the middle of the night in bed. It is necessary to take oral calcium supplement drugs, such as calcium carbonate capsules, Calcium D, calcium acetate capsules, etc. It is best to take calcium supplements orally at night before going to bed, the effect is better to help improve the absorption rate of calcium, to relieve the phenomenon of cramps in the middle of the night, and also to drink more milk. 2, cramps in the middle of the night is caused by cold, in this case we should pay attention to warmth, try to make the living environment warm and comfortable, avoid cold, damp, more covers or before going to bed using the Chinese medicine haitongpi soup for hot compresses. 3, sleeping cramps in the middle of the night is caused by injury, if there are contusions, sprains and other traumatic injuries, to go to the hospital in a timely manner, if necessary, to take X-rays and other auxiliary examinations to exclude whether there are fractures or other injuries.