Moistening the lungs to remove dryness refers to the use of medicines to keep the lungs moist and warm and free from the invasion of dryness. Chinese medicine believes that “the lungs are delicate organs”, intolerant of cold, heat, dryness and dampness of the invasion of all evils, that is to say, the lungs are more delicate, intolerant of the outside world of dryness, cold, heat and dampness, but the lungs and the outside world are closely linked, easy to be invaded by the interference of the outside world of evils. When external dryness or internal Yin deficiency damage and lungs, the physiological function of the lungs appear abnormal, appearing dry cough, coughing up blood, sore throat, dry throat, hoarseness and other diseases. When the lungs feel external dryness or internal heat from yin deficiency, the treatment should be based on the symptoms of the disease and give drugs to moisten the lungs to remove dryness or nourish yin and clear heat (nourish the yin essence and remove the heat) to moisten the lungs, so that the physiological function of the lungs can be restored to the normal state. When symptoms related to lung dryness occur, it is recommended to consult a hospital in time, and use drugs to moisten the lungs and remove dryness under the guidance of a professional physician, rather than dispose of them on your own to avoid delaying your condition.