Qingzaojiufei Decoction originated from the book of “Medical Legal” written by a famous doctor Yu jiayan in Qing Dynasty. It has the effects of clearing heat and nourishing yin and qi, and it is a famous prescription of treating autumn-dryness diseases. The prescription is designed for lung injury by dryness evil with its precise matching and definite clinical effect. Treating lung diseases caused by dryness evil, such as cough variant asthma, unexplained pulmonary nodules, and radioactive pneumonia by modified qingzaojiufei decoction has satisfactory clinical y effect, and it is necessary to proceed further studies.