There is no clinical method to completely eradicate sinus cysts. Sinus cysts may be related to inflammatory stimulation, mucus cysts in the maxillary sinus, congenital causes and other factors. They can be treated by washing the nasal cavity with saline, taking amoxicillin capsules and cystectomy. 1. Inflammatory stimulation: Inflammatory infection leads to the occurrence of nasal cysts. It can be treated by washing the nasal cavity with saline, taking amoxicillin capsules, roxithromycin capsules and so on. 2. Mucus cyst of maxillary sinus: chronic inflammation of the sinus stimulates the capillary wall of the lower part of the nasal mucosa, causing damage to the plasma exudation, the plasma accumulates in the sinus mucosa and leads to sinus cysts. It can be treated by taking ceftriaxone tablets and maxillary sinus cleaning surgery. 3. Congenital causes: Congenital developmental abnormalities of the glands due to glandular ducts are blocked can not be secreted, and some of the inflammatory factors of infection stimulation leads to the occurrence of nasal cysts. It can be treated by cystectomy, maxillary sinus radical surgery and so on. If the patient’s sinus cyst is serious, he should go to the hospital in time and find out the cause of the disease, and should follow the doctor’s prescription for medication. The diet should be light, and should not eat food with severe irritation.