From the patient’s sinus film, if the cyst inside the maxillary sinus is more than half of the area of the maxillary sinus, it is considered to be a particularly large case. Such patients tend to have a series of symptoms, such as frequent flow of yellow water, sometimes nasal congestion, nasal discharge, and even with dizziness and brain swelling, which often need to be solved by surgery. The patient needs to be hospitalized and scheduled for surgery under general anesthesia to remove the cysts inside the sinuses. The surgery needs to be done under nasal endoscopy, and after the surgery, the patient can return to the hospital and undergo regular follow-ups. After active treatment, the patient’s maxillary sinus cyst will improve. Try not to smoke and drink alcohol, do not catch a cold.