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Plastic-film mulching has improved crop production of cotton greatly in Northwest China. With the use of plastic film year by year, the problem of pollution has become increasingly apparent. Film mulching has many advantages, such as water storage and weed control, but overmuch residual plastic film fragments influenced the physical property of agricultural soil. Aiming at the pollution problem, the new national standard of plastic film was published. On the basis of the new national standard of weathering film, a collecting and removing device for the residual plastic film recovery machine was designed as the integrity of weathering film. By testing the mechanical properties of the weatherproof film and force of the residual film when collecting, the results showed that the film would not be broken during the collecting process. The key working parts were designed and analyzed, while the length and the arrangement of the nail and the film collecting parts were determined by plotting trajectory of end of collecting nail in soil based on the software of Matlab. Through the single factor experiment on the relationship between distance of chains and residual film collecting rate and straw removing rate, the optimal value of the chains spacing was obtained. The stress analysis of ground roller, collecting and removing device was carried out during the movement process, and the performance of the machine was tested. The field experiment results showed that the recovery rate of residual film was 89.54% when the forward speed of the residual film recovery machine was between 4.0km/h and 4.4km/h, indicating that the collecting device can meet the requirements of residual plastic film collection.