The present invention relates to a maleate salt of a compound represented by formula I, a method for preparing the salt, a pharmaceutical composition containing the salt, and the use of the salt. The present invention also relates to crystalline forms C, D and E of the maleate salt of the compound represented by formula I, methods for preparing the crystalline forms, crystalline compositions and pharmaceutical compositions containing the crystalline forms, and uses thereof.本發明關於一種式I所示化合物的馬來酸鹽、該鹽的製備方法、包含該鹽的藥物組合物和該鹽的用途。本發明亦關於一種式I所示化合物的馬來酸鹽的晶型C、晶型D和晶型E；它們的製備方法、包含它們的結晶組合物、藥物組合物及用途。
