Sweating is a common phenomenon in babies, and because of their high physiological metabolism and poor self-regulation, it is very common for babies to sweat while sleeping, not always as a symptom of weakness or illness. It is necessary to distinguish between physiological sweating and pathological sweating. 1, physiological sweating In children’s excessive sweating, there are many physiological excessive sweating, which is characterized by excessive sweating in the head and neck, often occurring within half an hour after going to sleep, and no longer sweating after an hour or so. 2, pathological sweating Pathological sweating occurs in the case of disease, commonly in rickets, tuberculosis and weak babies. It is characterized by the appearance of the baby in a quiet state, manifesting itself in the first half of the night after going to sleep, the baby’s head sweating significantly. The typical occipital ring-shaped hair loss is called “occipital baldness”, or sweating in the second half of the night and before dawn, accompanied by other manifestations, such as low fever, fatigue, loss of appetite, flushed cheeks, etc. If the sweating is physiological, just pay attention to increase and decrease clothing, keep the skin dry and replenish water; if the sweating is pathological or the cause of excessive sweating cannot be determined, you should promptly go to the hospital for relevant examinations to identify the cause and treat the problem.