First of all, it is important to clarify the condition of the sinuses, which refer to the air-containing cavities in the skull next to the nose, the maxillary sinuses of the maxilla, one on each side, the parotid sinuses in the cheek bone, one on each side; the frontal sinuses, one on each side, and the pterygoid sinuses. Bilateral septal sinus and left maxillary sinusitis is an inflammation of the three sinuses and is clinically formed mainly by infectious inflammation. Infectious factors are mainly bacterial infections such as streptococcal infections and amokra bacterial infections. These bacterial infections are followed by prompting mucosal congestion and edema, occult exudation, and sometimes purulent secretions in the sinuses, when the purulent secretions, especially in the maxillary sinuses, cannot be eliminated and can even be seen in the plane of fluid. CT is usually performed first to see the extent of the sinus lesion. Only simple mucosal inflammation can be treated without special treatment, and usually no oral medication is needed for disposal, and nasal spray of nasal glucocorticosteroids such as Reynocort can be used. If there is a collection of purulent secretions in the sinus cavity, there is new soft tissue, and the sinus opening is blurred, surgical treatment is required. The surgical treatment is usually performed under the pathological scope to remove the diseased polyps and mucosa, aspirate the secretions, and open the sinus opening so that the secretions in the sinus can drain out of the nose by themselves.