Abstract: Starting from the adverse effects of agricultural film residues on soil, crops, livestock and poultry, this paper briefly introduces the development status of plastic film recycling machinery in different working periods, such as pre-seedling plastic film recycling machinery, post-harvest plastic film recycling machinery and pre-sowing plastic film recycling machinery, and summarizes the main problems in the development of plastic film recycling machinery in China. Finally, the paper puts forward the proposal to upgrade the land. Judgment of the development trend of membrane separation efficiency and membrane recovery combined operation machinery