Spring is the high season of respiratory diseases, now in late winter and early spring, the climate is dry, the weather is warm and cold, the temperature difference between morning and evening is large, hot and cold is indeed the season of respiratory diseases such as colds, bronchitis, pneumonia, bronchial asthma, etc., especially the elderly, children and people with a history of chronic respiratory diseases, due to poor resistance, more likely to trigger respiratory infections, tonsillitis and other diseases. In addition, the burning of firecrackers during the Spring Festival makes air pollution significantly worse, and respiratory diseases are at a high incidence. Bacteria or viruses that cause respiratory infections have one thing in common: they are parasitic on the mucous membrane of the nasopharynx, causing the patient to cough, sneeze and other symptoms of upper respiratory tract infections early on. The germs and viruses are transmitted to others through the air by the saliva spewed from coughing and sneezing. Since the early stages of some respiratory infections are like colds, they are easily overlooked and misdiagnosed, which not only bring pain and danger to the patient, but also become an important source of infection because the patient is constantly discharging germs and viruses. In addition, after the Spring Festival, a large number of migrant workers return to their workplaces, students return to school, and the population is highly mobile, which provides convenient conditions for the occurrence and spread of respiratory diseases. Early prevention of respiratory infections, to do without disease prevention, early treatment of disease. Citizens can do a good job of prevention in the following areas: frequent indoor ventilation to keep the air fresh. Drink water regularly and keep indoor air humidity at 50-70%. During the epidemic season, you should reduce the number of visits to public places such as large gatherings, shopping malls and theaters, especially the elderly and children need to pay more attention. Wash your hands regularly, exercise regularly, and get vaccinated.