There are three colors of nasal discharge, namely clear nasal discharge, white mucous nasal discharge and yellow nasal discharge, which may be caused by wind-heat cold or chronic rhinitis. Wind-heat colds: Wind-heat colds are very common and highly prevalent, mostly occurring in the summer and autumn seasons. If a child suffers from a wind-heat cold, he or she will have the symptoms of a runny nose, along with a thickened and yellow tongue coating and a more serious fever. Chronic rhinitis: It is not uncommon for children to have yellow nasal discharge. If it is chronic rhinitis, in addition to yellow nasal discharge, symptoms such as headache and nasal congestion will also appear. The treatment of chronic rhinitis requires a long-term process, and parents of children with the disease must be early detection and early treatment, so that their children can be free from the torture and pain of the disease. It is important to pay attention not to catch cold, blowing wind, eating irritating food, etc. There are various reasons for children’s yellow nasal discharge, and in order to solve the problem at the root, we must find the causative factors, because only symptomatic treatment can achieve the desired effect.