Bilateral maxillary sinusitis is not a serious condition, but it can be very painful for the patient. If there is inflammation in both maxillary sinuses, the patient may have symptoms such as nasal congestion, pus, poor breathing, obstructed breathing, poor sleep, toothache, loose teeth, and other diseases such as rhinitis and sinusitis, etc. If this is the case, it is recommended that the patient be promptly examined and treated in a hospital. The treatment is divided into the following cases according to the mild and severe symptoms: 1. mild: if there are no symptoms or mild symptoms, it is a chronic inflammation, so it can be left untreated, followed by observation and regular review. 2. severe: if the symptoms are severe, the patient needs early surgery or other interventions for the relief of maxillary sinus inflammation.