Whether a sinus cyst needs surgery or not is usually not necessarily related to its size. If there is no obvious symptom, it can be observed and treated conservatively; if headache and other discomforts occur, then surgery is needed. 1. No discomfort: sinus cysts are usually around 1cm and do not have obvious discomfort, usually found during the examination of head CT, and do not need surgery for the time being. Even if the examination result suggests that the cyst is large, but has not yet appeared headache, brow bone pressure pain and other sensations, can also be observed conservatively. 2. Discomfort symptoms: sinus cysts in the process of growth, due to the growth of a special location, may cause the emergence of compression symptoms, manifested in the root of the nose with a sense of pressure, foreign body sensation, brow pain, etc. At this time, no matter how big or small the cysts are, it is necessary to go to the hospital for surgical treatment. After surgery to remove the sinus cyst, the above symptoms can be gradually relieved. Therefore, the size of the sinus cyst is not necessarily related to whether or not to undergo surgery. When headache, brow pain and other discomfort occurs, it is recommended to consult a doctor in time for surgical treatment. If you do not experience the above discomfort, you can observe conservatively. If there is any discomfort, consult a doctor for a clear diagnosis, and then follow the doctor’s instructions to standardize the diagnosis and treatment.