The invention provides a multi-luminous-region luminous Ag, Ga and N doping ZnO film and a preparation method of the multi-luminous-region luminous Ag, Ga and N doping ZnO film and relates to a ZnO film and a preparation method of the ZnO film. The invention aims at solving the technical problems of few luminous regions and weak luminous intensity of the existing single-doping ZnO film. The multi-luminous-region luminous Ag, Ga and N doping ZnO film provided by the invention is characterized in that a layer of Ag, Ga and N co-doping ZnO film is sputtered on a substrate. A method comprises the following steps that: ZnO powder and Ga2O3 powder are subjected to hot pressing to become ceramic sheets, and then, Ag is pasted to obtain target materials; the target materials and the substrate are placed into a radio frequency magnetron sputtering film coating machine, a sputtering chamber is subjected to vacuum pumping, then, mixed gas of N2 and O2 is introduced into the sputtering chamber, the film is obtained through the sputtering, the film is subjected to annealing, and then, the multi-luminous-region luminous Ag, Ga and N doping ZnO film is obtained. The film can be luminous respectively in an ultraviolet light region, a purple light region and a red orange light region and can be used in the field of photoelectric devices.