1. Reasons why babies sweat a lot while sleeping. Baby sweating a lot while sleeping may be due to the following reasons: 1. The room temperature is too high; 2. The baby wears too many or too thick clothes; 3. The baby is infected with a disease; 4. Family inheritance. wait. Parents can help their babies reduce night sweating by adjusting the environmental temperature, dressing appropriately, and seeking medical attention promptly. 2. How to judge whether the baby\’s sweating while sleeping is normal. In summer or when the temperature is high, it is normal for the baby to sweat while sleeping. But if in other seasons or the temperature is not