Nasal polyps are a common disease in otolaryngology, head, and neck surgery. The primary treatment for nasal polyps is functional endoscopic surgery to remove them. After the surgery, it is important to keep the following in mind: First, it is important to keep the nasal cavity clean. Clean the nasal cavity daily with saline solution and use some medications for treatment. Second, regularly visit the hospital to have the nasal cavity cleaned by the surgeon who performed the operation. Typically, the surgeon will instruct when to return for a follow-up visit, or schedule an appointment. Third, for nasal polyps, surgery is not the end of the treatment. It is generally necessary to continue daily medicinal treatment of the nasal cavity. Immediately after the surgery, it may also be necessary to take anti-inflammatory medications, such as roxithromycin or clarithromycin, for treatment. In summary, treatment and nasal cavity cleaning must continue even after surgery for nasal polyps. (Note: Please use medications under the guidance of a clinical doctor.)