The modification conditions of the film were optimized using zein and inulin as raw materials, and the properties of them were measured. The results showed that the optimum conditions were material ratio 101 (g/g), pH 6 with reacting for 48 hours. Under these conditions, the tensile strength of the zein-inulin film was 10.12 MPa, with 37.5% of the graft. the light transmittance, water resistance, oil absorption, and oxygen barrier of inulin-modified zein films were better than those in the original ones.