Sinus cysts can be treated by observation, medication or surgery. 1. Observation: Conservative treatment is suitable for patients with small sinus cysts, whose symptoms are not obvious. Generally, as the volume of the cysts increases, the walls of the cysts can be ruptured naturally, so that yellowish or brownish-yellow cystic fluid will flow out. 2. Medication: If the sinus cyst is combined with infection, you can use sufficient broad-spectrum antibiotics for anti-infection treatment under the guidance of the doctor, such as cephradine or penicillin. 3. Surgery: If the cyst is more serious, you can also choose cystectomy or maxillary sinus radical surgery, which can effectively treat the condition of sinus cyst. Patients need to actively seek medical treatment, systematic examination to clarify the type and cause of the disease, and follow the doctor’s instructions to standardize the use of drugs and treatment.