Aiming at the problems of traditional hand-guided vegetable seeders, such as low adjustment accuracy of hill spacing gears, wheel slippage leading to difficulties in dynamic adaptation of sowing depth and compaction strength, this study designed an intelligent precision vegetable seeder. A closed-loop seed metering control system based on non-contact speed measurement was developed to break through the precision limitations of traditional mechanical speed regulation. Innovatively adopting electrically-controlled hydraulic sowing depth adjustment mechanisms and adaptive compaction force devices, dynamic real-time regulation of sowing depth and compaction force was achieved. The new system significantly improves hill spacing stability, sowing depth consistency, and compaction adaptability, providing an integrated intelligent equipment solution for precision sowing of facility vegetables.