Spring is the first of the four seasons. Spring is the period from January to March in the lunar calendar, from the beginning of spring to the beginning of summer, and contains six festivals: spring, rain, stirring, vernal equinox, clearing, and valley rain. In the Yellow Emperor’s Classic of Internal Medicine, “Spring is the month of March, which is called Fa Chen.” It means that spring is the time for new life to emerge, when heaven and earth are full of life, and everything seems to be thriving. Spring is a season of changeable weather. As the saying goes, “Spring is a time of change for children.” This is because spring is the season of winter and summer monsoon transition, the Pacific warm current and the Siberian cold current convergence, resulting in cold and warm air currents compete with each other, resulting in climate change, so there are often yesterday the sun shines brightly, today it is cold and sometimes cold phenomenon. Spring is windy, wind is the main order of spring. According to Chinese medicine, wind is the longest of all diseases, that is, wind is the main pathogenic factor of external evil. Especially in spring, many diseases are related to wind, such as cold, rubella and allergic rhinitis. Therefore, as early as in the Suwen? The book “Shanggu Tianzhen” puts forward the principle of “avoiding the false evil and thieves’ wind sometimes”. In spring, despite the changeable climate, the temperature rises gradually. As the saying goes, “When all the grasses return to life, all diseases are easy to develop.” In the revival of everything, abandoning the old from the new time, a variety of disease-causing microorganisms also began to sprout reproduction, taking advantage of the opportunity to rampage, resulting in the occurrence and prevalence of influenza, epidemic meningitis, mumps, scarlet fever, chickenpox and other diseases, so this season is also a high incidence of infectious or infectious diseases.