Pediatric chronic sinusitis can exhibit many symptoms divided into major symptoms and concomitant symptoms. Specific symptoms are as follows: 1. Main symptoms: nasal congestion, runny nose, cough, headache, etc.; 2. Accompanying symptoms: smell impairment, hearing loss, abnormal behavior, etc. Pediatric nasal congestion can be manifested as open-mouth breathing, coarse air or snoring at night during sleep. Nasal runny can be yellow or yellow-green pus, or sticky white secretion. Cough can be manifested as daytime cough or nighttime cough during sleep, but the cough is usually not accompanied by a change in voice. In older children, the headache can be clearly identified, such as a persistent headache or pain in the back of the head that is not easily relieved. Younger children are often unable to articulate the site of pain, and some children will name or show hearing loss, such as some on their own, while others find out about hearing loss very much through their parents. This is often caused by otitis media due to inflammation of the nasal mucosa involving the pharyngeal orifice of the eustachian tube. Behavioral abnormalities are manifested by inattention, irritability, and irritability.