Sweating on the head of children sleeping may be caused by physiological reasons, vitamin D deficiency rickets, tuberculosis and other reasons. 1. Physiological reasons: due to the high basic metabolism of children, it is easier to sweat than adults, if the warmth is too much, the room temperature is high, etc., may lead to sweating of the baby’s head, which is a normal phenomenon. 2. Vitamin D deficiency rickets: when the child vitamin D deficiency, may lead to rickets, the baby sleep head sweating situation, and also accompanied by crying, irritability, night terrors and other symptoms. 3. Tuberculosis: If the child suffers from tuberculosis, it may be due to the toxins and metabolites produced by Mycobacterium tuberculosis causing dysfunction of the autonomic nervous system, appearing as a child’s sleeping head sweating, low fever and other symptoms. After the child sleep head sweat exclude physiological reasons, parents should immediately take the child to the hospital, complete the relevant examination, clear cause of the disease and follow the doctor’s instructions for treatment.