Cluster compound films with various colours had been formed by the reaction of MoS^2^-~4 on the surface of copper. The results of FT-IR, XPS and AES study show the formation of Cu-S-Mo bonds on the surface. The cluster films are composed of four elements, Cu, Mo, S and O, showing +1, +6, -2 and -2 valence state, respectively. There also exists little of sulfur of +4 and +6 valence. The films are all multimolecular doublelayers. Most of the MoS~4 units are kept in the inner layers while some MoO~2S~2 units exist in the outer layers. The thickness of the film depends on the reaction time. The heated films are also composed of Cu, Mo, S, O, Mo infiltrated to the inner layer while S concentrated on the surface. Cu showes +1 and +2 valence state, S is -2, +4, +6 valency while the valence state of Mo and O unchanged. So, the films are complicated multicomponent systems, their colours are caused by the overlap adsorption of various sorts of compounds.