If it is the cause of excessive internal heat, you can drink sweet herbal tea such as seven star tea or water chestnut. In addition, it may be because the capillary network of the child's nasal cavity is not well developed. In the dry season, for children with a history of nosebleeds, there should be chlortetracycline eye ointment at home, which should be evenly applied to the nasal cavity every day to moisturize the nasal mucosa.