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No-till planter works below mulch of the surface stubble, straw and weeds, plastic mulch. The operating environment is poor and could easily lead to blockage and planting depth instability of no-till planter. In order to solve the broken stubble blockades, reduce stubble breaking resistance and improve the ditching stability and quality of ditching broken stubble, a new type Archimedes screw notch disc stubble breaking knife was designed based on the ridge tillage planter agricultural technical requirements of corn in the Northeast of China. The structural characteristics and size parameters were determined, gap number Z=11, maximum radius Rmax =215 mm, starting radius R0=175mm, corners Φ=32.72°, and the equation of motion was also established. The broken stubble knife indoor comparison tests of three discs (screw linear notched disc, disc smooth, semi-circular notch disc) proved the superiority of the screw linear gap broken stubble disc cutter. Meanwhile the quadratic regression mathematical models for screw linear notched disc blade broken stubble crop stubble resistance and disc type, weight machines, forward speed were established. Reserch achievement provided the theoretical basis for optimization design of stubble-breaking device. 