What kind of medicine for children’s postnasal drip syndrome cough can not be generalized, you need to choose the right drug according to the cause of postnasal drip syndrome, postnasal drip syndrome is mainly related to allergic rhinitis, sinusitis and other causes. 1. Allergic rhinitis: the nasal mucosa reacts with allergens, usually manifested as nasal itching, sneezing, runny nose, coughing, etc. It is mainly treated by anti-allergic drugs, such as loratadine, cetirizine, etc., and at the same time, it should be accompanied by nasal rinsing with physiological saline or sea salt water. 2. Sinusitis: Sinusitis is an inflammatory disease of the mucous membrane of the nasal cavity, caused by infection, the main symptoms of headache, drowsiness, nasal congestion, cough, etc., can be relieved by drugs such as penicillin, cefixime, clarithromycin and so on. Surgery is needed to improve nasal ventilation if necessary. Postnasal drip syndrome cough in children may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. The use of medication should follow the doctor’s instructions.