The so-called hazards of septum surgery may refer to common complications, such as: having incomplete correction, septal perforation, nose deformation, septal abscess and so on. 1. Incomplete correction: In case of deviated septum surgery, the deviated septum is not completely corrected after the surgery. 2. Nasal septum perforation: If the nasal mucosa and cartilaginous membrane are directly removed along with the deviated bone during the operation, it will cause the complication of nasal septum perforation after the operation. 3. Nose deformation: the removal of septal cartilage during the operation has more nasal bridge, or improper postoperative care, resulting in cartilage softening and necrosis and other complications, which leads to the collapse of the bridge of the nose. 4. Nasal septum abscess: postoperative septal hematoma is infected by bacteria, which leads to complications such as nasal septum abscess. It is recommended to go to regular hospitals for nasal septum surgery to avoid the above hazards.