Abstract: Aiming at the problem that the existing residual film recovery machine has a low pick-up rate and the recovered residual film contains a large amount of debris, straw and other impurities. By adding a film cutting device, a film suction and impurity removal device, and collecting film device, an air suction type residual film recovery and impurity removal integrated machine was developed. In this paper, taking the forward speed, the speed of the elastic tooth chain and centrifugal fan speed as the test factors, the field test was carried out with the pick-up rate of the residual film after work. The results show that the influence of various factors on the pick-up rate of the residual film is large to the small: speed of the elastic tooth chain ＞ forward speed ＞ centrifugal fan speed. Through orthogonal test range analysis and variance analysis, when the forward speed is 5 km/h, the speed of the elastic chain is 225 r/min, and the centrifugal fan speed is 1 900 r/min, the pick-up rate of the residual film is 91.6% and the impurity rate of the residual film was 10.5%. The research results can provide a theoretical basis for the research and development of residual film recovery equipment.