In autumn, diseases caused by dryness and those caused by deficiency of body fluids are called "autumn dryness" syndrome. According to traditional Chinese medicine, dryness is one of the six exogenous pathogenic factors (wind, cold, summer heat, dampness, dryness and fire), and it is the main qi of autumn. Dryness is also a pathogenic factor. The characteristic of autumn dryness is dryness, and sometimes there is also a bit of "dry heat", which is due to the drop in air temperature. The suitable relative humidity for people's living is around 70%. When the humidity is higher or lower than this, people will feel uncomfortable. However, in autumn, the relative humidity often drops below 60%, sometimes only 30% to 40%. Dry air can harm the Yin and body fluids. The moisture in the skin and mucous membranes will evaporate more rapidly, causing people to feel dry skin, a dry nose, dry lips, discomfort in the throat, and even hoarseness and dry cough. Medical experts throughout history have believed that after autumn, the best way to treat dryness is to focus on health preservation and dietary adjustment. You can drink more warm boiled water, light tea, mung bean soup, soy milk, milk, etc., and often eat fruits such as pears, apples, bananas, persimmons, oranges, grapes, water chestnuts, etc., to moisten the lungs, generate body fluids, nourish Yin and clear dryness. You can also consume some animal and plant foods that have the effect of relieving dryness and reducing internal heat, such as fish, duck eggs, chicken, beef, pork liver, kelp, laver, lotus root, fresh vegetables, etc. At the same time, one should eat less cold food and spicy foods such as garlic, strong alcohol and chili peppers. In late autumn, the essence and energy within the body start to be stored. If one takes tonics, they can be easily absorbed and stored. Therefore, people with weak constitutions, the middle-aged and elderly, and those with chronic diseases can choose to consume foods such as red dates, lotus seeds, water chestnuts, Chinese yam, and lily bulbs, which are light and mild tonics, according to their symptoms, to facilitate physical maintenance. In daily life, one should get up and go to bed early, pay attention to balancing work and rest, and do appropriate physical exercises, such as walking, running, doing exercises and practicing boxing. It is advisable to wash your face with cold water frequently and avoid crowded public places. Going on an outing is also a good way to relieve the dryness of autumn. During the holidays when the golden wind is refreshing and the autumn scenery is charming, visiting green areas such as parks, suburban areas, lakesides and watersides to enjoy the natural scenery and breathe fresh air is not only beneficial for relieving dryness but also helps enhance one's disease resistance.