Salts of gefitinib medicine and preparation method of salts

The invention relates to novel crystal forms of L-malate and hydrobromide of an anti-cancer drug N-(4-{[6,7-bis(methoxy)quinoline-4-yl] oxo} phenyl)-N'-(4-fluorophenyl) cyclopropane-1,1-dicarboamide and a preparation method of the novel crystal forms. Peaks are formed at the positions of 2theta being 9.33 degrees, 11.75 degrees, 13.44 degrees, 15.16 degrees, 19.72 degrees, 23.14 degrees and 25.92 degrees in an X-ray powder diffraction pattern of the novel crystal form of the malate; and peaks are formed at the positions of 2theta being 8.68 degrees, 13.01 degrees, 17.45 degrees, 19.52 degrees, 20.05 degrees, 21.71 degrees, 23.29 degrees and 26.28 degrees in the X-ray powder diffraction pattern of the novel crystal form of the hydrobromide. The novel crystal forms have relatively good physical and chemical properties, are beneficial to operation in production and can be applied to a pharmaceutical preparation.