Abstract: In order to improve the seed uniformity of the five-element seeder in corn plot, the motion law of five-row seeding process in corn plot was analyzed.Discrete element EDEM simulation software was used to establish simulation model.The diameter, cone angle and lifting speed of seed-storing sleeve were taken as experimental factors. The variation coefficient of uniformity was used as the test index.The three-factor and three-level quadratic orthogonal test of different sowing rates was carried out. The effects of various factors on the uniformity of five-row sowing in maize plots were investigated. Through the simulation test analysis, the best parameter combination was carried out.When 125 and 250 seeds were sown, the optimal parameter combination of each factor in the process of maize seed differentiation was obtained by Design expert software : The diameter of the seed storage sleeve was 65mm.The cone angle was 48 °.The sleeve lifting speed was0.24m/s.At this time, the coefficient of variation of maize uniformity R₁ was 26.93% and R₂ was 27.82 %. The indoor bench verification test was carried out through the simulation analysis of the five rows of corn plots. The results showed that the coefficient of variation R₁ was 28.06% and R₂ was 27.90%.The error between actual artificial seeding and simulation analysis was 1.13% and was 0.08%.It showed that the simulation test analysis and the actual artificial seeding operation effect were basically in line with the actual seeding requirements of the five rows of corn plots.