La2/3Sr1/3Mn1-xZnxO3 films (x=0.05, 0.1, 0.3, and 0.5) were prepared using magnetron sputtering method, and the effect of Zn doping on transport properties of the films was studied.An analysis of X-ray diffraction showed that the main phase of the bulk target was orthorhombic and the films had better epitaxial character.It was found that the films with x=0.05 and x=0.1 exhibited typical insulator-metal transition.No transition of the films with x≥0.3 was observed and the dominant transport was variable-range hopping due to observable secondary phase ZnO.These could be attributed to the Zn doping effect on manganites.