The causes of excessive sweating in children include physiological factors such as high room temperature or heavy exercise, and may also be caused by pathological factors such as calcium deficiency and fever. 1. Physiological factors: most often seen in high room temperature, exercise, etc., children’s metabolism, but children’s neuroendocrine system regulation function is relatively poor, the cerebral cortex of the autonomic nervous system inhibition function is poor, only through the sweat, in order to evaporate the body’s heat, in order to regulate the normal body temperature. 2. Calcium deficiency: If you don’t give your child vitamin D supplements in time, or outdoor activities, it can lead to calcium deficiency, resulting in increased neural excitability, which can lead to head shaking, sweating, night terrors and other phenomena. 3. Fever: children with fever use antipyretic drugs or the body temperature is in the period of decline, will sweat through the skin to dissipate heat. Thus lowering the body temperature. Caused by children sweating may have other reasons, it is recommended to go to the hospital in time for relevant examinations, clear causes and active treatment.