If the child has been snot, parents can first spray with saline to clean the child’s nasal cavity, can reduce the retention of snot, and at the same time to consider oral oleander drops, spray with budesonide nasal spray to treat. If the child’s condition does not improve after about half a month of medication, it is often necessary to go to the hospital to improve nasal endoscopy or nasopharyngoscopy. You can also take a CT scan of the nose to clearly identify why your child has a runny nose. Sometimes it is because of inflammation in the nasopharynx, sometimes it is because of adenoid hyperplasia in the nasopharynx, which often requires further symptomatic treatment, or even surgery if necessary, before your child’s runny nose can be improved. It is recommended that children exercise more to strengthen their resistance.