The child’s yellow nasal discharge and high fever may be related to acute rhinitis, sinusitis and influenza. 1. Acute rhinitis: commonly known as the common cold, due to viral infection followed by bacterial infection, causing acute inflammation of the nasal mucosa. Manifested as high fever or even convulsions, the mucous glands of the nasal mucosa will secrete mucous and yellow nasal discharge. 2. Sinusitis: it may be caused by pneumococcus, staphylococcus and other infections leading to chronic inflammation of the nasal cavity, usually manifested as fever, vomiting, yellow nasal discharge and other symptoms. 3. Influenza: an acute respiratory infectious disease caused by influenza virus. Because the respiratory ciliated epithelial cells are infected, die off, secondary bacterial infection, yellow nasal discharge, usually accompanied by high fever, headache and other symptoms. Children with yellow nasal discharge and high fever can also be seen in other causes, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions to carry out relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or therapy.