After the beginning of autumn, the weather changes from hot to cold. Traditional Chinese medicine believes that Yang is raised in spring and summer, and Yin is raised in autumn and winter. The beginning of autumn is the time when Yang is gradually changed to Yin. Therefore, the principle of health preservation in autumn is "harvest". In the beginning of autumn, the summer heat is not over, the temperature will not drop quickly, and it is likely that the temperature will rise in a short time, and the weather will gradually change from hot to dry. Although there is a cool wind, the weather is changeable, the temperature difference between morning and evening is large, and the day is still hot. Therefore, after the beginning of autumn, heatstroke prevention and cooling should continue without any slackness. We should be careful of heatstroke. According to traditional Chinese medicine, dryness is the evil of six Yin, which is the main Qi in autumn. It is dry and easy to consume body fluid. It is common to have a series of symptoms such as dry mouth and tongue, astringent nose and sore throat, dry skin, dry stool and restlessness. It is called "autumn dryness syndrome" in medicine. The adaptability and tolerance of the elderly to autumn climate change are relatively poor, and prevention should be paid more attention. To prevent dryness in autumn, we should take nourishing yin and clearing dryness, moistening the lungs and generating fluid as the basic principle. Traditional Chinese medicine has the method of clearing away heat and moistening the lungs. It can be used to decoct water such as Ophiopogon japonicus, chrysanthemum and Lily instead of tea. It has the effect of nourishing yin and moistening the lungs, clearing the heart and eliminating annoyance, benefiting the stomach and generating fluid. It is a good recipe for preventing autumn dryness in autumn. After the beginning of autumn, the temperature difference between day and night is large. At this time, it is easy to feel external pathogens and cause colds. Remind everyone to pay more attention to avoid catching cold at night in terms of clothing and rest at home. Early autumn is also a high incidence period of infectious diseases. Children often have fever symptoms, sometimes have nausea, vomiting, diarrhea and other abnormal manifestations, and need to seek medical attention in time. On the night of early autumn, many people are used to not covering the quilt. Being too greedy for cool can easily lead to diarrhea and headache. Therefore, in the early autumn, pay attention not to be greedy, pay attention to food hygiene, maintain emotional stability, and pay attention to changing clothes at any time. In the diet, we should persist in eliminating heat and clearing heat, and eat more food that nourishes Yin and moistens the lungs. Traditional Chinese medicine believes that dry Qi rises in autumn, which is easy to injure body fluid. Therefore, the diet should mainly nourish yin and moisten the lungs. It is suitable to eat soft food such as sesame, glutinous rice, honey, loquat, pineapple and dairy products to benefit the stomach and generate saliva. (outlook new era)