Sinusitis refers to the inflammation of one or more groups of nasal sinuses, often accompanied by nasal polyps. Nasal polyps are lychee-like, semitransparent, grayish-white growths that are soft in texture and visible inside the nasal cavity. In such cases, it is advisable to consider functional endoscopic sinus surgery under general anesthesia and nasal endoscopy to remove the polyps and ethmoid sinuses. After the surgery, it is essential to perform regular cleaning, reduce inflammation, and provide antihistamine treatment, as sinusitis often leads to the recurrence of nasal polyps. Furthermore, allergens can also trigger the recurrence of nasal polyps. Therefore, after surgery, regular follow-ups, anti-inflammatory, and antihistamine treatments are necessary. Generally, with such management, nasal polyps and sinusitis can be effectively cured.