Sweating on the head of infants, mostly due to high metabolism, wearing too thick, rickets. 1. Exuberant metabolism: infants grow and develop faster, the metabolism is relatively fast compared to adults, and because the baby’s skin is relatively thin, the distribution of blood vessels, it is easy to lead to sweaty head, sweaty hands and feet and other phenomena. 2. Wearing too thick: some parents are worried about babies getting cold and tend to wear thicker, babies need to dissipate heat through the skin, so they will sweat more. 3. Rickets: often caused by the lack of vitamin D and calcium, which can cause excessive sweating of the head, and accompanied by waking up at night, restless sleep at night and other symptoms. Infants with excessive sweating of the head, if accompanied by other uncomfortable symptoms, should be timely to the hospital to identify the cause, targeted treatment.