Abstract: With the expansion of corn planting scale, the performance of corn planters directly determines the level of corn production. The traditional corn planter uses a mechanical operation method.During the sowing process, there are many problems such as missing sowing and uneven planting distances, which seriously affect the production quality and yield of corn. In order to solve this problem, this article applies advanced technology such as single-chip microcomputer technology and sensor technology to the corn seeder.Based on the in-depth study and analysis of the structure and working principle of the single corn seeder,the overall control system of the corn seeder is completed.The design of the scheme, the module selection of the hardware part of the control system, the design of the circuit schematic diagram of the key components such as single-chip microcomputers, speed sensors,stepper motors, and the optimization of the software operation process of the control system,and finally carried out testing test of planting plant distance, the test proves that the optimized automatic control system of the corn planter has high sowing accuracy, uniform planting space, and no leaking phenomenon, which has certain research significance for the improvement of agricultural production and has a large promotion value.