Sinusitis is a common and frequently occurring disease in otolaryngology. Patients with sinusitis mainly suffer from blockages at the sinus openings due to polyps, tumors, and mucosal edema, which leads to pus and fluid accumulation within the sinuses. The primary symptoms in patients include nasal congestion, runny nose, headaches, and fever. For patients with sinusitis, the first step should be to use a paranasal sinus CT scan to make a definitive diagnosis of the disease and identify the affected sinus locations. Treatment can then involve the use of decongestants and corticosteroid medications to address symptoms. For sinusitis caused by foreign bodies or nasal polyps and tumors, surgical opening of the sinus openings can be performed to restore normal sinus drainage and cure the disease. (Specific medications should be used under the guidance of a doctor.)