Sweating on the child’s head may be related to environmental factors, or it may be caused by vitamin D deficiency rickets, hypocalcemia and other reasons. 1. Environmental factors: due to the child’s own metabolism is more vigorous, the body’s high basal metabolic rate, easy to head sweat phenomenon. Especially in the hot environment, due to the high temperature of the environment, will lead to head sweating more obvious. 2. Vitamin D deficiency rickets: the disease can lead to increased neural excitability of the child, which may lead to sweating on the head, especially when just going to sleep, sweating on the head is more, but also may be accompanied by restless sleep, frequent waking at night and other symptoms. Sweating on the child’s head may also be related to other factors, if accompanied by obvious symptoms, should be consulted as soon as possible, after diagnosis of the causal factors, to give targeted treatment.