Sinusitis is an inflammatory lesion of the mucosa and submucosa of the sinuses, and there is no differentiation of its severity, but only according to the etiology, the extent of the lesion, the duration of the disease, the presence of serious complications and whether it is accompanied by other diseases and other factors to make the corresponding division. Mild sinusitis may be asymptomatic, or the symptoms may be mild, such as sometimes runny nose, nasal congestion and so on. Symptoms of severe sinusitis mainly include mucopurulent nasal discharge, headache, nasal congestion, and decreased sense of smell. Some patients may suffer from cough, phlegm, stuffy ears, tinnitus, headache, dizziness and other discomforts secondary to pharyngitis, bronchitis, otitis media, obstructive sleep apnea syndrome and other diseases. It is recommended that patients should seek early medical treatment after the occurrence of the above symptoms to clarify the diagnosis and the extent of the disease, and then follow the doctor’s instructions to standardize the use of medication and treatment.