Nasal polyps can be considered for saline irrigation, with the main types of saline used being physiological saline or physiological seawater. The main function is to help improve nasal ventilation and reduce swelling of the nasal mucosa. It also has some therapeutic effects for patients with poor sense of smell. However, overall, saline irrigation is still considered an auxiliary treatment method, and it is recommended to consider medication treatment. If the nasal polyps cover a wide range and the clinical symptoms are quite apparent, it could also be accompanied by sinusitis. Under such circumstances, endoscopic surgery might be necessary, which involves the removal of nasal polyps under endoscopy. Depending on the condition of sinusitis, concurrent sinus opening surgery might be required. It is advisable to visit an otolaryngology clinic for a formal diagnostic evaluation to determine the best treatment approach.