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Directed sowing corn can make the corn growthconsistent, increasing core planting density and yield of crops. Corn directional sowing tapes was one of the methods to realize the directional seeding. In order to ensure that seed direction deflection did not occur in the process of adsorption, we designed the seed adsorption arranging mechanism, and established the mechanical model of joint adsorption of seed. Software Fluent was used to make simulated analysis of the seed suction airflow field. Taking suction cone angle, hole spacing, and lateral plate width as three factors, an orthogonal experiment was carried out, and the directional absorption-arranging of corn seeds was determined. The best suction model parameters were as following, suction cone angle was 60°, hole spacing was 1.5 mm, lateral plate width was 4 mm, and air velocity was 6~8 m/s.