The invention relates to use of protein kinase inhibitors in the preparation of a medicament for the treatment of fibrotic diseases. Specifically, The invention relates to use of 6-(4-((1-aminocyclopropyl)methoxy)-1,2-dihydrofuro[3,2-f]quinolin-9-yloxy)-N-methyl-1-naphthamide or 5-(2-Diethylamino-ethyl)-2-(5-fluoro-2-oxo-1,2-dihydro-indol -3-yldenemethyl)-3-methyl-1,5,6,7-tetrahydro-pyrrolo[3,2-c]pyridine-4-one or their pharmaceutical salts in the preparation of a medicament for the treatment of fibrotic diseases.本發明涉及蛋白激酶抑制劑在製備治療纖維化疾病的藥物中的用途。具體地說,本發明涉及6-(4-((1-胺基環丙基)甲氧基)-1,2-二氫呋喃並[3,2-f]喹啉-9-基氧基)-N-甲基-1-萘甲醯胺或5-(2-二乙胺基-乙基)-2-(5-氟-2-側氧基-1,2-二氫-吲哚-3-亞基-甲基)-3-甲基-1,5,6,7-四氫-吡咯[3,2-c]吡啶-4-酮,或者它們的可藥鹽中的一種或幾種在製備治療纖維化疾病的藥物中的用途。
