Cold dew ranks seventeenth among the twenty-four solar terms, and generally appears on1October 8-9 every year. Due to the arrival of cold dew, the climate changes from hot to cold, and everything is born with cold, which is a season of alternating hot and cold. In nature, the qi of yin and yang begins to change, the yang is gradually declining, and the yin is gradually flourishing, so our physiological activities should also adapt to the changes in nature. If nursed back to health improperly, the human body will have a series of autumn dryness symptoms such as dry throat, dry nose and dry skin. Therefore, the diet in late autumn should nourish yin and moisten dryness. We should eat more soft foods such as sesame, glutinous rice, japonica rice, honey and dairy products, and at the same time increase chicken, duck, beef, pork liver, fish, shrimp, jujube and yam. Enhance physical fitness; Eat less spicy products, such as pepper, ginger, onion, garlic and so on. Mental conditioning can not be ignored, because the cold climate, reduced sunshine, wind blowing leaves, often cause a sense of desolation in some people's hearts, emotional instability, easy to produce sad and melancholy mood. Therefore, maintaining a good attitude and cultivating an optimistic and open-minded attitude are indispensable contents of health preservation. In addition, when it is cool in autumn, people's life time should be adjusted accordingly. It is found in clinical diagnosis and treatment that whenever the climate gets cold, the number of patients with cerebral thrombosis will increase. The reason is related to the cold weather and the increase of people's sleep time. When people sleep, the blood flow slows down and it is easy to form blood clots. (End)