Based on the L-type stubble breaking blade and the wide rototilling blade, nine kinds of universal blades were designed. The optimum structure parameters of the universal blade were determined through the power consumption (torque) test of a single blade in a soil bin. The main structure parameters of the universal blade were as follows: the bend angle was 67°, bending radius was 20mm, sliding cutting angle of the frontal cutting edge was 12°, and the working width of a single blade was 60mm. The rototilling contrast tests between the universal blade and national standard rototilling blade and stubble cutting contrast tests between the universal blade and the mass produced stubble breaking blade were conducted. The test results show that: the power consumption per unit working width of the universal blade was less than that of national standard rototilling blade, but more than that of the typical stubble breaking blade. When they had the same width, the universal blade power consumed was less than the national standard rototilling blade and the typical stubble breaking blade, which proved that it was reasonable and feasible to select the structure parameters of the universal blade. 