Sinusitis can be divided into acute sinusitis and chronic sinusitis. Children with acute sinusitis often have fever, and their main symptoms are nasal congestion, yellow pus nasal discharge, and are accompanied by headache and repeated high fever, and in severe cases the temperature can exceed 39°C. In terms of treatment, parents can let their children take oral cefaclor pellets with Oronema drops to promote the outward discharge of pus from the sinuses, the two drugs need to be taken one hour apart to avoid mutual reactions between drugs, and at the same time, they can let their children take oral ibuprofen suspension for antipyretic treatment. The main symptoms are headache, nasal congestion and yellow pus nasal discharge. The main symptoms are headache, nasal congestion and yellow pus nasal discharge.