Sweating at night may be caused by high ambient temperature and calcium deficiency. 1. High ambient temperature: If the indoor temperature is too high when the child sleeps, the child will feel hot when sleeping, at this time, often need to sweat to dissipate heat, which will lead to sweating, especially if the quilt is too thick, sweating will be more. 2. Calcium deficiency: children’s growth and development is relatively fast, if there is a lack of calcium, it is easy to lead to the cerebral cortex is too excited, the night will be sweating, and there will be restless sleep and other symptoms. Children sweating at night may also be caused by other reasons, if accompanied by symptoms of discomfort should be timely consultation to find out the cause.