Sinusitis surgery time is difficult to have a definite conclusion, most patients may need 1-2 hours of surgery time, the specific individual surgery time may be related to the severity of the lesion, the level of experience of the doctor and other factors, especially the severity of the lesion is the main factor. Clinical analysis of the following: First, the severity of the lesion, if it is a unilateral maxillary sinusitis, the operation may be relatively smooth, some half an hour can do the operation. If it is a whole group of sinusitis, accompanied by nasal septum deviation, the existence of more obvious nasal and sinus anatomical structure abnormality, and even accompanied by nasal polyps and other related diseases, the operation time may need 2 hours or more. If there are anatomical abnormalities, orbital cardboard defects or anatomical defects and other factors, the operation is more difficult, the operation time may also need to be relatively longer, some patients, such as easy to bleed during the operation or blood pressure, cardiovascular and cerebral vascular accidents, the operation time should be even more prolonged. Second, the doctor’s level of experience is related, if the doctor has done a lot of surgery, the anatomy is very clear, the time to do the surgery will be relatively shorter. In short, sinusitis surgery time is generally 1-2 hours, the specific time should be based on the individual situation comprehensive decision.