According to the agronomic requirements of mechanized high-speed planting sugarcane in China, the special seed-metering device for sugarcane with chain plate is developed, which mainly includes lifting device, pushing device and electric control device system. The parameters of main working parts are designed, calculated and analyzed. The parameters of main working parts are designed and calculated. The test results show that the machine meets the agronomic requirements of sugarcane planting, and has the characteristics of continuous, high-speed,high-efficiency, precision sowing, missing sowing and low repetition rate, which can realize the purpose of mechanized precision planting of sugarcane.