A
quinazoline derivative (represented by the formula (I)) salt's
crystal form, a preparation method and application are provided; specifically, the
hydrochloride crystal form A, B, C, D, F, H, I, Sulphate
crystal form A, Maleate crystal form A, Succinate crystal form A,
Adipate crystal form A, Glycolate crystal form A, Malate crystal form A, Fumarate Salt crystal form A, besylate crystal form A, B, C, benzoate crystal form A, hippurate crystal form A and
oxalate crystal form A of the
quinazoline derivative represented by formula (I). The salt crystal form provided by the present invention has good stability, which can be used in the treatment of non-
small cell lung cancer brain metastasis, meningeal
metastasis, primary
brain cancer or
glioma, etc., and has good
bioavailability, which is of great significance for further research on the
efficacy of such
solid drugs.