In order to improve the precision of the horizontal displacement and reduce the vibration of punching rod controlled by single-track cam a double-track was designed for direct insert corn planting furrow seeder for whole plastic-film mulching on double ridges. Based on the virtual prototype of direct insert corn planting furrow seeder, the inside/outside contact curves of double-track cam were generated to design the cam. The sharp singularity transition in the contact curves of double-track cam could cause too vigorous impact between the cam and the rod to achieve the expected movement, even completely stop. So it is necessary to optimize the singularity transition by arc curve. The displacement in x, y direction was little changed for the curves before and after optimization. There was no interference between the hole former driving by the double-track cam with the ground by the simulation of virtual prototype of direct insert corn planting furrow seeder. By the analysis of the maximum deformation and stress of the double cam under the maximum impact and tension, it is found that the maximum deformation is 0.092 mm and the biggest Von-Mises stress was 19.8 MPa, far less than 67 MPa. The double-track cam can meet the demand for the operation of direct insert corn planting furrow seeder for whole plastic-film mulching on double ridges.