The UV absorbances of Cu(Ⅱ) analog complexes prepared with imidazole and several derivatives were determined,on the basis of which the structures of the analog complexes and the coordination agent-coordination center ratios of the complexes were obtained. The structures of the films formed by imidazole compounds on the surface of copper were determined by using XPS.The mechanism of film forming for imidazole and its derivatives on the surface of copper was developed by means of comparing the structures of the films and those of the analog complexes.