Traditional rake mulching film recycling machine had the problem of difficulty in unloading and packing film, poor continuity of the work. In order to solve such problems, a kind of chain rake type mulching film recycling machine which can realize continuous raking film, collecting film, transporting film, shaking off soil and unloading film was designed. The recycling machine mainly composed of frame, membrane shovel, chain rake, collecting box and so on. In order to optimize the performance of the film recovery machine, first of all, the single factor test and response surface optimization experiment were carried out on structural parameters and working parameters in soil tank laboratory. Through experimental study in soil tank, the quadratic regression equation of mulching film recycling rate, unloading film rate and quality of the soil in the film were obtained. The optimal parameters were as follows: the spacing between rake teeth assembly was 300mm, the number of rake tooth in single rake was 5, the depth of rake tooth inserting soil was 84.41mm, film recycling machine forward speed was 2.542km/h, and the speed of the chain rake was 0.417m/s. Finally, through field experiments, the performance indicators of this type of mulching film recycling machine were as such: mulching film recycling rate was 90.2%, unloading film rate was 88.1%, and the entrained soil weight was 0.41kg/m. Field experiments show that the chain rake type mulching film recycling machine can meet production requirements.