Abstract: In order to improve the seeding bud rate of hybrid garlic by planting garlic seeder, a method was put forward to control the direction of garlic seeds by using the lower center of gravity of garlic seeds and the elongated sprout tips of garlic seeds in series, namely, the sectional kind of groove was designed in the metering device stage, using garlic seed characteristics under focus on improving seed straight into the orientation of probability. In the commutation stage, the arc opening directional device was designed, the germination tips of garlic seeds were exposed as much as possible to improve the positive germination rate of garlic scaly buds with short bud tips. With orientation speed and seed tip length as test factors and positive bud rate as test index, bench test was conducted. The results showed that the effect of garlic bud tip length on the positive bud rate was obvious, and the positive bud rate decreased with the increase of orientation speed. Taking Jinxiang hybrid garlic as the experimental object, the field sowing performance of the directional system was tested. The experimental results showed that the positive budding rate of Jinxiang hybrid garlic reached about 85% when the walking speed was in the range of 0.14-0.19 m/s, which generally met the agronomic requirements of garlic sowing. Using the two physical characteristics of garlic seeds in series can improve the directional stability of garlic seeds from the operating principle. This study will provide a reference for the development of garlic seeding mechanization.