Abstract: In view of the problems of stubble difficult treatment, residual film leakage and poor operation effect of residual film recovery machine, a combined residual film recovery machine with stubble treatment and residual film recovery function was designed, and its structure and working principle were described. Taking the forward speed of the machine, the depth of the film lifting shovel into the soil, the speed ratio of the film collecting roller and the gear chain film collecting mechanism as the test factors, and the residual film recovery rate and film wrapping rate as the test objectives, the three factor and three level response surface test was carried out, and the optimization analysis was carried out by using the design expert software. The results show that the rotation speed ratio has the greatest influence on the recovery rate of residual film and the film wrapping rate, and the shovel depth has the least influence. The results show that the best combination of working parameters is when the forward speed of the machine is 6 km/h, the digging depth of the film is 56 mm, and the speed ratio is 1.47. The field test shows that the relative error between the theoretical value and the actual value is small, and the optimization result is reliable, which can provide a reference for the selection of working parameters of the residual film recovery machine.