In the middle of the night calf muscle cramps, very painful, is due to excessive muscle fatigue or there is a significant night cold, therefore leading to muscle tissue is very tense, in the case of force may induce the emergence of the situation after the emergence of this situation to take the following measures: first, must allow the cramped muscles to pull, so as to be able to lift the spasm of the situation. For example, after a muscle cramp occurs in the back of the calf, the ankle joint must be in a dorsal extension, so you can stand and step on the ground with your toes. This way, the ankle joint is in a dorsal extension, and the muscle spasm can be quickly lifted after pulling the muscles on the back side, and it should be further maintained for a period of time, because if it is loosened, it may lead to cramps again. Second, we must pay attention to the warmth of the calf area, not to appear cold, otherwise it may again induce cramps. Third, you can use a warm water bag hot compress, you can also put a magnetic therapy patch on the calf position, which can effectively increase the local temperature, promote blood circulation, relax the muscle tissue to reduce inflammatory stimulation, can be very good treatment.