The main causes of excessive sweating in children are as follows: First, children have a high metabolic rate and their bodies produce more heat, which makes them inherently more prone to sweating than adults. Second, environmental factors, wear too much clothing, cover too much, activity, crying, eating too much, etc., can lead to excessive sweating in children. Three, rickets, childhood calcium deficiency or even rickets, can be manifested as excessive sweating, irritability, head occipital baldness, bone development deformities, etc.. Fourth, tuberculosis, children sweating a lot, especially night sweats, accompanied by other symptoms such as wasting, weakness, etc., should consider tuberculosis and other conditions. V. Endocrine diseases such as hyperthyroidism in children can also present with symptoms such as fear of heat, excessive sweating, weight loss, palpitations, and agitation. Therefore, when children have excessive sweating, they need to go to the hospital for further examination to identify the cause.