Four-year-old children love to sleep and sweat may be physiological factors, may also be the emergence of hyperthyroidism and other factors. 1. physiological factors: if physiological factors caused by sleep sweating, generally do not have to be overly nervous, such as high ambient temperature or children are too excited may produce this symptom, you can adjust the ambient temperature, do not have to use medication. 2. Hyperthyroidism: some children sleep sweating may be caused by hyperthyroidism, hyperthyroidism after the body’s metabolism speed up, the nervous system excitability, so this symptom, you can follow the doctor’s instructions to use methylthiouracil, propranolol and other drugs treatment. Usually need to pay attention to the children’s diet, eat more food containing more calcium, vitamin D deficiency can also lead to similar symptoms, four-year-old children love to sleep sweating suggest timely medical attention, clear diagnosis, follow the doctor’s instructions to be targeted treatment.