Sinusitis is divided into acute sinusitis and chronic sinusitis, leading to sinusitis common causes persist in the living environment, so any sinusitis can not be completely eradicated, even through active, standardized targeted treatment, but also can only control the disease, improve the symptoms, once the triggering factors may lead to recurrence of the disease. 1. Acute sinusitis: the onset of the disease is often associated with pathogenic microbial infections, allergies and abnormalities in the structure of the nasal cavity and sinuses, which may cause yellow nasal discharge, nasal congestion, olfactory disorders and other symptoms. 2. Chronic sinusitis: The causes of chronic sinusitis are many, such as environmental pollution, climate change, neighboring organ disease and acute sinusitis repeated episodes, can lead to sinus inflammatory symptoms. If the patient has nasal congestion, runny nose, smell obstruction and other discomforts, he can go to the ENT department of the hospital. Through relevant examination, such as rhinoscopy, sinus CT, etc., to determine the type and severity of sinusitis, under the guidance of the doctor for standardized treatment.