Minimally invasive surgery for sinusitis may involve anesthesia risk, risk of improper surgical operation, and risk of postoperative infection. 1. Anesthesia risk: Minimally invasive surgery for sinusitis is performed endoscopically and requires local or general anesthesia, which may have certain anesthesia risks, such as incorrect use of anesthetics or use of too large a dosage, which can lead to lower blood pressure, slow heartbeat, slow reaction or memory loss. 2. Risk of improper operation: If the operation is not done properly during minimally invasive surgery for sinusitis, it may damage the optic nerve or eye muscles and blood vessels, etc., and there is a risk of complications such as loss of vision, diplopia and impaired eye movement. If it causes damage to the base of the skull, it may trigger the risk of complications such as cerebrospinal fluid leakage and brain tissue damage. 3. Risk of postoperative infection: If the local or systemic resistance is reduced after minimally invasive surgery for sinusitis and secondary infection by pathogenic microorganisms, symptoms such as local swelling, pain, fever, vomiting or general weakness may occur. Minimally invasive surgical treatment of sinusitis is mostly carried out after preoperative examination and accurate assessment, and the various risks that may occur during and after the operation will generally be within the controllable range. If there is any postoperative discomfort, it should be reflected positively with the surgeon and follow the doctor’s instructions for reasonable treatment.