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The air-suction seed metering device is the most commonly used seed meter in the domestic market. However, it has a high missing-seeding rate when used to sow non-circular seeds, as the seeding stops unpredictably, causing an entire line of missing-seeding. By studying the metering device's structure, a new type of air-suction compensating precision metering device was designed and presented in this paper. The metering device is installed with a detection device as well as an intelligent seeding compensation device. It thus has real-time control over the seeding case, and can both offset missing-seeding and promptly respond to seeding stoppage. All of these features can ultimately lower the missing-seeding rate and improve the quality of seeding effectively.