Sinusitis surgery, which is done only when the condition requires it, has more benefits than drawbacks. The harms and side effects are potential complications, such as postoperative bleeding, postoperative nasal adhesions, eye injuries, cerebrospinal fluid nasal leakage and so on. 1. Postoperative bleeding: Generally, it is due to the damage of blood vessels during the operation, and after the temporary disposal of scabs, bleeding is triggered again due to the shedding of scabs during the recovery period, which leads to the phenomenon of bleeding of the organism after the operation. 2. Postoperative nasal adhesion: usually due to the swelling of the nasal cavity neighboring structures after surgery, the traumatic surfaces adhere to the deformity of healing together, which in turn leads to nasal adhesion, which can block ventilation, impede secretion drainage and other side effects. 3. Eye injury: it may lead to orbital cardboard orbital fascia injury, tear duct damage, hematoma, pain and other symptoms. 4. Nasal leakage of cerebrospinal fluid: Generally, it is due to the fact that during the operation, there is a possibility of certain damage to the base of the skull, which in turn leads to the phenomenon of nasal leakage of cerebrospinal fluid. If you feel obvious discomfort after the operation, you need to actively feedback with the medical staff and standardize the treatment in time.