Sinusitis puncture refers to maxillary sinus puncture and rinse, which is mainly used for the treatment of maxillary sinusitis. Maxillary sinus puncture and rinse may cause fainting, infection, air embolism and other hazards due to the operator’s unskillful technique or improper operation, but the incidence is relatively low. 1. Fainting: mostly due to nervousness, pain or empty stomach. Generally, it can be recovered after lying down for a few moments. 2. Infection: improper operation during puncture, etc. may puncture into the nasal submucosa causing mucosal tear; puncture into the soft tissue of the face; puncture the infraorbital wall; puncture into the posterior outer wall of the maxillary sinus; it may cause infections in the face, orbital, pterygopalatine fossa and other parts of the face. The infection may cause fever, pain and other symptoms. 3. Air embolism: If the puncture needle mistakenly enters the blood vessel during the puncture operation, the injection of air into the blood vessel will cause air embolism. Therefore, after the puncture needle enters the sinus cavity during the puncture operation, it is necessary to pump back whether there is pus or air to judge whether the puncture needle enters the sinus cavity. It is recommended that maxillary sinus puncture irrigation to the regular hospital for treatment to avoid puncture complications.