Children with yellow runny nose may be caused by upper respiratory tract infection, sinusitis and other causes, according to the cause of different targeted treatment, including supportive therapy, anti-infection and other treatments. 1. Upper respiratory tract infection: Upper respiratory tract infection can lead to the symptoms of yellow nasal discharge, usually bacterial infection or bacterial-viral mixed infection, you can use saline to rinse the nasal cavity, in order to alleviate the symptoms of nasal congestion. In addition, it is necessary to use sensitive antibiotics for anti-infection treatment, including penicillin, cefixime and so on. 2. Sinusitis: Sinusitis patients may also have symptoms of yellow nasal discharge, in addition to the use of saline rinse nasal cavity, you can also use nasal sprays such as budesonide nasal spray to reduce nasal congestion, in addition to the need to use sensitive antibiotics for anti-infective treatment. There are other symptoms that may cause yellow runny nose in children, and it is recommended to consult a doctor for a clear diagnosis and targeted treatment. All of the above medications should be used under a doctor’s supervision.