Crystalline forms or polymorphs of 4-amino-5-fluoro-3-[5-(4-methylpiperazin-1-yl)-1H-benzimidazol-2-yl]quinolin-2(1H)-one lactic acid salts, as well as to methods of making the same, pharmaceutical compositions comprising the same and methods of treatment using the same.本發明提供4-胺基-5-氟-3-[5-(4-甲基哌嗪-1-基)-1H-苯并咪唑-2-基]喹啉-2(1H)-酮乳酸鹽之結晶型或多晶型物,以及其製備方法,包含其之醫藥組合物及使用其治療之方法。