Children’s nocturnal nasal discharge is usually considered to be caused by bad position, allergy or sinusitis, etc. It can be treated by changing the position, saline rinsing and taking anti-allergy drugs. 1. Changing position: You can elevate the baby’s head to a semi-recumbent position during sleep to minimize the occurrence of backflow of nasal mucus. 2. Saline rinsing: Saline rinsing of the nasal cavity before bedtime can clean up nasal secretions to a certain extent, alleviate the symptoms of runny nose and reduce the occurrence of reflux. 3. Medication: If allergic rhinitis and other diseases, you can use loratadine, cetirizine hydrochloride drops and other treatment under the guidance of a doctor. At the same time, pay attention to stay away from allergens. In short, children with symptoms of nasal discharge at night, should first go to the hospital, according to the doctor’s professional guidance to solve the phenomenon of runny nose.