Whether or not a five year old child with sinusitis needs to have a radiograph depends on the clinical symptoms as well as the nasal endoscopy and whether or not there is a need for the condition. After the child suffers from sinusitis, often manifested as a runny nose, headache and other symptoms, the need to promptly go to the hospital otorhinolaryngology department to take nasal endoscopy, which is the outpatient diagnosis of sinusitis is the most basic kind of examination, can accurately check to the sinus lesion site, diagnosis of sinusitis condition. However, if the child’s sinusitis symptoms recur or persist during treatment, and if surgical treatment is required, then a cranial CT examination can be performed, and changes in sinus size and morphology can be clarified through CT imaging. This provides detailed information for subsequent treatment and the development of a surgical plan. If the child has sinusitis symptoms, should be timely to the hospital, with the doctor to take the examination, clear diagnosis after targeted treatment.