1.Strengthen the follow-up prevention, because the post-operative follow-up prevention is conducive to the removal of post-operative sinus cavity secretions, proliferation of granulation, infection control, release of nasal adhesions, adjust the treatment plan at any time, in order to shorten the course of treatment, improve the cure rate, post-operative follow-up prevention has the same important role as the surgery itself. Therefore, patients should follow the doctor’s instructions and come to the hospital regularly for follow-up; 2. follow-up time: generally come to the hospital for the first time around 2 weeks after surgery, and then 2-4 weeks according to the recovery of the surgical cavity; 3. continue to use antibiotics, hormones and other drugs as prescribed by the doctor after discharge; apply intranasal aerosol (e.g. Zend, Cochlear, etc.) for nasal spray; 4. learn to wash your own nose and avoid nose digging; 5. learn the correct method of nose blowing; 6. pay attention to nutrition and Strengthen physical exercise, enhance physical fitness and prevent colds.