The most effective way to treat chronic sinusitis is to exercise, improve body resistance, prevent colds, and actively treat acute sinusitis. It should also be supplemented with appropriate treatment for those with systemic chronic diseases. Once the diagnosis of chronic sinusitis is confirmed, its treatment should also follow. The main focus should be on eradicating the cause, ensuring smooth drainage of the sinus openings, controlling infection and preventing complications. Depending on the extent of the lesion, different methods are chosen. Broadly speaking, treatment can be divided into non-surgical and surgical therapies. If patients are given a choice between non-surgical treatments, it is safe to say that the majority of patients will choose non-surgical methods. The main non-surgical treatments are as follows: How to prevent and treat chronic sinusitis? (1) Topical nasal medication Like this 1% ephedrine saline nasal drops are widely used and are very cheap. These drops can effectively reduce the swelling of the sinus mucosa and open up the opening, making it easier for the pus to flow out of the sinuses. It is normal to use it four times a day, with about 2 drops each time. Nasal drops should pay attention to the body position. Generally, the supine position with the nostrils facing upward is used. Do not pinch the bilateral nostrils and blow hard, as this will press the snot through the pharyngeal canal to the middle ear, thus causing otitis media. Antibiotics or hormones can also be added to ephedrine nasal drops to increase their anti-infective and anti-allergic effects. This type of nasal decongestant can lead to drug rhinitis if used for a long time, so the medication should not be used for more than 7 days. The concentration of medication for children must be reduced accordingly. (2) Oral drugs Oral antibiotics should be based on bacterial culture and drug sensitivity tests, and the duration of medication is usually 4-6 weeks. If accompanied by allergies, you can also add some anti-allergic drugs, some proprietary Chinese medicine for the treatment of chronic sinusitis is also good, such as nasal fountain Shu, sinusitis oral liquid, etc., can be applied with antibiotics. (3) positive and negative pressure replacement method Suitable for chronic whole group boundary sinusitis, is a simple and effective method. During the treatment, the patient lies flat on the treatment bed, with a small pillow under the shoulder and the head tilted back and down. First, 1% ephedrine saline drops into the nasal cavity to fully contract the nasal cavity, open the sinus mouth, and then insert the suction tube outside an olive head into one side of the anterior nostril, pinch the anterior side of the nostril, open the suction device, the patient continuously send intermittent “open an open an open – …… “Sound nasal sinus pus will be sucked out, the sinuses become negative pressure. Then the antibiotic medicine drops in the nasal cavity, the medicine will enter the sinuses. So repeatedly many times, will be the pus in the sinuses and replace into the drug, to achieve the purpose of treatment. Usually 1 time a day, 10 days a course of treatment. (4) Maxillary sinus puncture rinse A specially made puncture needle can be used to puncture the maxillary sinus from our lower nasal passage, then the pus will be drawn out, and then saline will be used to rinse the feeling, so that the pus inside is drained, and finally antibiotics will be injected, this method is very when the maxillary sinusitis patients. Surgical therapy is considered if the condition does not improve in adults after more than 8 weeks (12 weeks in children) of systematic treatment with non-surgical therapy or if CT shows irreversible lesions in the nasal sinuses. Preoperative CT sinus radiographs are routinely performed to clearly show which sinuses are involved in the lesion, whether the sinus openings are obstructed, and whether the structures in the nasal cavity are abnormal. Combining the history, examination and changes in the sinus CT, the rhinologist will decide whether the patient needs surgical treatment.