Objective: To observe different effects of Maimendong Decotion and Gancao Ganjiang Decotionin on pulmonary fibrosis rat in the stage of fibrotic phase. Methods: After 14 days of establishing rat model by intratracheal injection of bleomycin,Maimendong decotion( 7. 5 g / kg,15 g / kg,30 g / kg) and Gancao Ganjiang decotion( 3. 75 g / kg,7. 5 g / kg,15 g / kg) were given by gavage once a day for 2 week. Meanwhile,the model group and the normal group were administered with distilled water of same quantity.Afte...