Normal ventilation on the 4th-5th day after septum surgery. Deviated nasal septum is a common clinical condition in otolaryngology, mostly causing clinical symptoms such as nasal congestion, recurrent nasal bleeding and headache. It usually requires surgical correction after the age of 18, and is usually handled as an inpatient. Currently, most of them are operated under general anesthesia via nasal endoscopy, and for those who cooperate well, they can also be operated under local anesthesia. After surgery, the nasal cavity is routinely filled and compressed bilaterally with Vaseline gauze or absorbable medical polymer material to prevent postoperative bleeding or hematoma formation. Usually the stuffing is removed about 72 hours after the surgery and the nasal cavity can resume normal ventilation after removal. If there is a brief period of ventilation after removal, but a day later a progressive nasal congestion is felt, it is necessary to rule out the possibility of complications from a nasal septal hematoma.