It is widely recognized that the application of plastic film mulch technology is evolving from “white revolution” to “white pollution”, because the residual plastic film could damage the physical and chemical structures of soil. Consequently a variety of plastic film collectors were developed and most research aimed at enhancing the field plastic film collecting rate and working continuity. However, the residual plastic film strips collected by current collector were loose and easily disturbed by wind and transportation of these film strips were difficult as well as their utilization ratio was low. To solve these problems, a collecting and separating device for strip plastic film baler was designed based on statistical analysis for main physical parameters of the film strip, which decided the performance of the baler and deforming effect of plastic film package. The device consisted of separating roller, eccentric collecting cylinder and film removing mechanism. The layout of separating spring teeth was double helix herringbone symmetrical arrangement. When the motion tail of separating roller was trochoid, the revolving speed was determined as 86.3r/min by force and motion analyses. The size of eccentric link mechanism was optimized by fitting tool of Matlab software, and the revolving speed and installation angle of collecting spring teeth was determined as 65r/min and 45° by performance test, respectively. According to force analysis and flow simulation of vane-type film removing mechanism, the linear velocity of vane should be more than 1.485m/s to ensure that the residual film could be removed and transported into film bin. Field experiments indicated that the surface residual plastic film collecting rate was 90.96%, film twining rate was 1.09%, stalk and soil removing rate was 77.35%, and the average working efficient of this baler was 0.19hm2/h when forward velocity of the baler was 1.5m/s, which met the requirements for residual plastic film collecting machine.