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Aiming to solve the problem of leakage webcasting for corn seedmeter, a reseed shift speed system was designed, which used photoelectric sensor to early detect at the position deviated from the kinds of ports by 20°, and a stepping motor changed seedmeter when leakage occurred sowing speed over the empty slot to achieve real replant seed purposes. In order to make the shift to replant system have the versatility, specifically representative corn grain appearance shape varieties were selected, including Jiulong No.5 (spherical), Jiudan No.57 (cone) and Zhengdan No.958 (rectangle). Taking different speeds as test factors, the seeding performance was studied by using of EDEM software and seeding performance test bed, simulation results showed that when the speed was not exceeded 23.1r/min, the impact of speed shifting on seeding performance was not more than 2%, when the rotational speed reached 32.3r/min, serious shaking phenomenon of seed would happen. Test results showed that the scoop-type replant seed metering systems equipped with variable speed when the rotation speed was 13.9~23.1r/min, drain sowing rate was not exceeded 1.4%, the average replant rate was 89.95%, seeding rate reached 98.7%;at the speed of 27.7r/min, compared with the original scoop-style metering, its row seed sowing leakage index was decreased by 10.4%, the effect of replanting was the most obvious;when the speed reached 32.3r/min, the effect of replanting was not obvious;the seeding performance of three corn varieties showed a decreasing trend of spherical, rectangular and cone.