The vast majority of respiratory infectious diseases are transmitted through the respiratory tract by droplets, therefore, the prevention of respiratory infectious diseases, mainly from the following aspects: 1, respiratory infectious disease patients do not spit, because sputum contains a considerable number of germs, drying easy to float in the air, resulting in the spread of; 2, the patient should pay attention to personal hygiene, including washing and drying clothing and bedding diligently; 3, the patient lives in the living room should be more Ventilation; 4, infectious patients do not just go to public places to activities, especially do not close to others coughing or laughing loudly, sneezing to cover the nose and mouth, so as not to infect others; 4, healthy people, usually to eat a balanced diet, strengthen physical exercise, improve physical fitness; 5, for susceptible populations, such as children and the elderly, and the patient to take relative isolation measures, maintain a considerable distance, if necessary, need to wear a mask; 5, for vulnerable groups, such as children and older people, to take relative isolation measures, maintain a considerable distance, and if necessary, need to wear a mask. The most important thing is that infected patients should be actively treated.