Abstract: This paper designs a kind of machine pick-up mechanism of rolling and binding residual film recovery with nail teeth.By analyzing the movement track of pick-up mechanism,the main factors that affect the pick-up rate of pick-up mechanism are obtained.The orthogonal tests are carried out for three factors: the moving speed of the machine,the depth of the nail teeth and the transmission ratio between pick-up mechanism and release mechanism.Through the test, it is found that the depth of the nail teeth into the soil has a significant effect on the film pick-up rate, and the moving speed of the machine has a significant effect on the film pick-up rate.The optimal working parameters of the machine are as follows: the forward speed of the machine is 3.6 km/h,the depth of the nail teeth into the soil is 50 mm,and the transmission ratio of the film picking mechanism and the film unloading mechanism is 1:3.