In view of the lack of large-scale and high-efficiency seeder in the process of green manure hairy vetch sowing, we can only use manual sowing or general drill seeder. This paper designs a special seeder for green manure hairy vetch. The seeder can sow 7 rows at one time, the seed width is 3.3m, and the maximum sowing speed can reach 25km / h. The biggest feature of the planter is the combination of air compressor, rotary tiller and planter, which can complete the whole process of rotary tilling, sowing and covering soil compaction at one time, and solve the problems of uneven sowing, high labor intensity and low drilling efficiency in the process of green manure and hairy vetch sowing.