When a 7-month-old baby has a lot of sweating on his head during sleep, several aspects are usually considered. If the sweating is just an hour or so after falling asleep, it is usually related to the autonomic function of the baby at a young age and is a normal phenomenon. In addition, environmental factors such as high temperature and thick clothing and blankets can make your baby sweat, so you can improve the environmental temperature and reduce clothing and blankets. Excluding the environmental factors, when sweating is high, especially at night and in the second half of the night, sweating is also high, that is, night sweats, the more common cause is related to vitamin D intake and calcium malabsorption. In this case, adjust the vitamin D supplementation method appropriately, and at the same time ensure milk intake to ensure adequate intake of calcium in food. In addition, some babies may be suffering from certain diseases, physical exertion and relative weakness, also prone to sweating more. At this time, pay attention to adjust the diet structure to ensure a balanced and rich intake of nutrients, and gradually restore the body can be. When the baby sweats more, you need to dry the sweat in time to avoid sweat to take away too much heat from the body surface, so that the baby has a local skin temperature too low.