Recently, “autumn cough” induced by cold and flu is particularly common, and the number of patients in the respiratory department of hospitals has increased compared to usual. This cough is characterized by a dry cough with a dry throat, itchy throat, little phlegm and shortness of breath. Autumn cough is related to the dryness, which invades the lungs and causes coughing. Autumn cough also has precursors, when you feel uncomfortable with a dry throat, after two or three days you may be about to commit autumn cough. Generally speaking, the weak elderly, children and those with Yin deficiency and dry heat are more likely to suffer from “autumn cough”. Children’s poor ability to adjust to changes in external cold and warmth, and the reduced moisture in the air in autumn, can easily lead to dry mouth, dry skin and cough without phlegm, which is called “dryness” in Chinese medicine. As the lungs of children are delicate organs, the temperature difference between day and night in autumn is large, and the wind can attack the body and cause the onset of coughing, which can be intense and last for a long time, sometimes more than half a month. Some children have a mild cough during the day, but the more they cough late at night, the more violent the cough becomes. Some parents see their children coughing and think they have a cold, so they treat them with cold medicine or cough medicine. If you use irrelevant cold medicines and antibiotics, you will gradually lose your body’s vital energy and your condition will change from an external cough to an internal cough, making the patient’s illness longer, more serious and more troublesome to treat. It is understood that autumn cough is mainly caused by “lung dryness”, which is divided into “warm dryness” and “cool dryness”. “Warm dryness” is characterized by a dry cough, a loud voice, little phlegm, a desire to drink water, a red tongue and a yellow, dry tongue coating; “cool dryness” is characterized by a low cough, low voice, thin white phlegm, a dry mouth but no desire to drink water, a light red tongue tip and a white, moist tongue coating. Autumn dryness, replenish water to keep moist is most important. Therefore, the first thing to do at this time of year is to ensure that you get enough water every day. The best drink is plain water, you can also drink some pear juice. In addition, you should also properly eat more fruits that nourish Yin and moisten dryness, such as sugar cane, pears, apples, grapes, kiwi, etc. These fruits are rich in juice, which can replenish rich vitamins and nutrients for the body and have obvious moistening effect. In addition, there are white radish, honey, etc. is also a good food to moisten the lungs. ”Warm dryness” should eat cool food to nourish Yin, such as lily, ginseng, American ginseng, yucca, etc.; while “cool dryness” is suitable for eating warm food, such as almonds, Chen Pi, Huai Shan, barley, etc.. If you have to take tonic, you should choose “clear tonic” and abandon “greasy tonic”. For example, prince’s ginseng and red ginseng, which have the effect of tonifying Qi, are “clear tonic”, while the latter is “greasy tonic”.