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The corn precision seeder with whole plastic-film mulching on double ridges in dry land was researched independently. The horizontal absolute velocity of hole-former was made zero at seeding time by using cam and crank combination mechanism to control it, which could improve the planting operation process tore film, picked film and dislocated of the soil hole with hole-former. For further study the working performance with the corn precision seeder, the Box-Behnken experimental design with four factors and three levels was performed, parameters such as seeder speed, rotation speed of crank mechanism, rotation speed of cam mechanism and angle of film cutter were selected as independent variables, which would influence dislocation of soil hole rate. The mathematical model was established. The effects of various parameters and their interactions were analyzed as well. The test results showed that effects order of four parameters on dislocation of soil hole rate were as follows: rotation speed of cam mechanism, rotation speed of crank mechanism, seeder speed and angle of film cutter. The optimal working parameters were seeder speed of 0.50m/s, rotation speed of crank mechanism of 50.2r/min, rotation speed of cam mechanism of 46.4r/min and angle of film cutter of 23.6°, then the dislocation of soil hole rate production of 1.221% was obtained. Confirmatory tests showed that the relative error was little.