Abstract:Children rhinosinusitis is a common inflammatory ear, nose and throat disease, the incidence of which is increasing every year. European position paper on rhinosinusitis and nasal polyps (EPOS) 2020 added a new chapter on sinusitis in children and adolescents to help doctors diagnose and treat in children sinusitis more standardized and professional.Meanwhile it also can raise the awareness of doctors about children sinusitis. If children with sinusitis are not treated in time, it may cause serious orbital and intracranial complications. If not timely diagnosis and treatment, it may lead to irreversible blindness, double vision and other serious consequences. If the disease is detected and treated early, the prognosis is generally good.In addition to clinical symptoms and experimental examination, the diagnosis of complications of sinusitis in children is often clarified in combination with imaging examination. Strengthening imaging examination is of great clinical significance for the diagnosis and treatment of children sinusitis, especially complications. Therefore, this article focuses on the CT and MRI imaging research of common types of children sinusitis and its complications.