The key to preventing chronic sinusitis is to improve immunity, prevent respiratory infections, and actively treat nasal infections or inflammation, as follows: 1, we must eat a healthy diet, ensure balanced nutrition, and intake of adequate vitamins and trace elements; 2, to avoid overwork and over-tiredness, and we must exercise moderately, to improve immunity, and to reduce the risk of respiratory infections; 3, in the respiratory infectious disease season, we should do protective measures; 4, for the elderly with chronic diseases or low immunity, we must reduce the opportunity to go to crowded public places to reduce the number of infections, must pay attention to the weather in time. Outside should be good protective measures, wear a good mask; 4, for accompanied by chronic diseases or immunity of the elderly group, must reduce the opportunity to go to densely populated public places to reduce the number of infections, must pay attention to the weather in a timely manner, pay attention to the changes in temperature, the appropriate increase or decrease in clothing; 5, combined with the asthma patients must be actively treating asthma, effective control of the condition, to avoid the progression of chronic sinusitis.