Infants sleep a lot of sweat at night, considering the physiological or pathological factors caused by physiological factors such as the environment hot and stuffy; pathological factors such as calcium deficiency, can also cause infants to sleep at night sweating. 1. Physiological factors: when the baby sleeps in the environment is too hot and stuffy, it can cause sweating; it can also be due to too much food intake before bedtime, resulting in too much heat, coupled with the baby’s metabolism is already vigorous, thus appearing in the case of sleep sweating. 2. Pathological factors: when the lack of calcium, will lead to increased secretion of sweat glands in infants, thus appearing easy to sweat. There may be other reasons why babies sweat a lot at night, so we recommend that you go to the hospital in time, complete the examination to determine the cause of the disease, and then give targeted treatment under the guidance of the doctor.