Objective This study aims to prepare food preservation films with controllable quality clear functions and high safety. Methods Chitosan was used as the film-forming matrix and rutin an antioxidant monomer was used as the active substance. Chitosan CS -based films were prepared by adding different mass concentrations 0% 0. 05% 0. 1% 0. 2% and 0. 4% w / v of rutin in 20 mg / mL chitosan acetate 2% solution. The effects of different concentrations of rutin on the physicochemical properties mechanical properties and antioxidant activity of composite films were studied. The structure of the composite film was characterized by UV scanning Fourier transform infrared spectroscopy X-ray diffraction and scanning electron microscopy. The preservation effect of the composite film on sesame oil was tested using oven accelerated oxidation method. Results The addition of rutin deepened the color of the film decreased the thickness tensile strength water content and water vapor permeability of the film and increased the elongation at break opacity and water solubility. The addition of rutin caused changes in the crystalline morphology of chitosan but had little effect on the flatness of the CS film. The addition of rutin can effectively eliminate DPPH and ABTS free radicals and can effectively delay the oxidation and rancidity of sesame oils. Conclusion CS-based films incorporated with rutin can be used as a good food preservation film with high antioxidant activity and green safety. The VP-3 composite film with a rutin concentration of 0. 2% has the best overall quality and is expected to be developed into a food preservation film with good antioxidant activity and mechanical properties controllable quality and green safety.