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Aiming at the problems such as population accumulation and high water content of rice seed which are not easy to be adsorbed during seeding process, a kind of airi-suction rice seed precision discharge device with convex and disturbed seed copying hole was designed. According to the mechanical and physical characteristics of Yliangyou No.1 hybrid rice, which is widely used in South China, the structure and geometric parameters of the profile-shaped hole were designed rationally. The dynamic and kinematic analysis of filling and seeding process was carried out, and the range of working speed and working negative pressure was obtained. Based on the fluid-structure coupling theory of CFD-DEM, the adsorption force was taken as the test index, and the adsorption performance simulation tests of seven diameters were carried out. The suction hole diameter with the largest adsorption force was determined to be 1.4 mm. At the same time, the average velocity of rice bud seed was taken as the evaluation index, and the simulation test of disturbed seed performance was carried out. Under the conditions of working speed 10~50 r/min, working negative pressure 1.2 kPa and suction hole diameter 1.4 mm, the disturbance ability of the seed plate with convex species copying hole was strong, which could effectively reduce the population accumulation phenomenon. Based on this suction hole, the working speed and working negative pressure were selected as test factors, and the qualification index X1, replay index X2 and missing sowing index X3 were evaluated. The two-factor full factor bench tests were carried out. The test results showed that when the working speed was 25 r/min and the working negative pressure was 1.24 kPa, the qualified index of the seed feeder was 92.64%, the replay index was 2.57%, and the missing sowing index was 4.79%. The results showed that the average qualified index of each line was 92.86%, the average reseeding index was 2.72%, the average missing sowing index was 4.42%, the average qualified rate of hole distance was 90.57%, and the coefficient of consistency of discharge of each line was 3.12%. The coefficient of variation of total displacement stability was 1.89%, and all the evaluation indexes met the planting requirements of rice bud seed precision direct seeding, which provided a certain theoretical basis for rice bud seed seeding.