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A clamping static and dynamic finger-spoon maize precision seed metering device was designed based on limited guiding principle to improve the performance and adaptability of maize seed metering device and meet the requirements of precision planting. The overall structure and working principle of the seed metering device were illustrated and analyzed. The optimal design of structural parameters of key components was conducted, such as the finger-spoon plate and the limited guiding assembly. The single factor tests were carried out with rotational speed and adjustment dimension as the experiment factors. The average seeding qualified index and the seeding coefficient of variation were chosen for evaluating the seeding performance. The results showed that the clamping finger-spoon maize precision seed metering device had good adaptability to four different types of maize seeds. To improve the working performance of the metering device and obtain the best operation parameters, the quadratic general rotary unitized design was carried out. Based on experimental data, a mathematical model was built by using the Design-Expert 6.0.10 software, the experimental factors were optimized, and the best combination was achieved. Test results showed that as the rotational speed was 30.5r/min, the adjustment dimension was 12.0mm, and the seeding qualified index was 88.41%, the seeding coefficient of variation was 12.32%, which could meet the requirements of precision planting. The results can provide the guidance and direction for the design and development of high-speed precision mechanical seed-metering device.