Nose enlargement after deviated septum surgery may be due to psychological factors, internal nasal infection, bad habits and other reasons. 1. Psychological factors: the nose usually does not get bigger after the deviated septum surgery, the patient may feel that the nose has become bigger because of psychological hints, if there is no other discomfort in the nose, there is no need to worry too much, and you can do a good job in the postoperative care. 2. Nasal cavity infection: After the deviated septum surgery without good care, it is easy to lead to the patient’s nasal cavity infection, such as septal hematoma with infection or septal abscess, so the patient will find that the nose is big after the operation, accompanied by nasal congestion, rhinorrhea, and even fever and other symptoms. It is recommended to go to the hospital in time for follow-up and symptomatic treatment. 3. Bad habits: patients have the bad habit of picking their noses for a long time after the operation, which will lead to the irritation of the nasal mucosa leading to the enlargement of the nasal cavity, and due to a certain degree of extension of the nasal tissues, which will lead to the enlargement of the nasal cavity after regular picking of the nostrils. If the patient has other uncomfortable symptoms in addition to the enlarged nose, it is recommended to go to the hospital immediately.