The baby suffers from the underlying disease leading to runny nose combined with bacterial infections may appear yellow thick nose symptoms, common causes include upper infection, rhinitis and other combined bacterial infections, need antibacterial treatment at the same time for the treatment of the original disease. 1. upper respiratory tract infection: baby yellow nasal discharge may be a viral infection combined with bacterial infection resulting in upper respiratory tract infection, need to use cephalosporin, amoxicillin, azithromycin and other sensitive antibiotics for anti-infective treatment, and at the same time do a good job of the basic treatment in order to help the disease recovery. 2. Rhinitis: If rhinitis causes the above situation, in addition to the need to use sensitive antibiotic treatment, such as cefixime, etc., but also need to cooperate with the doctor active treatment of rhinitis pathogenesis, common types of rhinitis, including allergic, infectious, etc., need to comply with the doctor’s instructions for targeted treatment. The baby flowing yellow thick nose may also have other reasons, it is recommended to go to the hospital in time to carry out relevant examinations, clear causes for targeted treatment. The above drugs need to be used under the guidance of a doctor, not to be taken on their own, so as not to bring about adverse effects on the body.