The invention relates to the technical field of planting tools, in particular to a multifunctional quantitative sowing device, comprising a fixed plate, a roller is provided at the left end of the fixed plate, and a connecting beam is fixedly connected to the right end of the fixed plate, and the top of the fixed plate is sequentially arranged from left to right A seed storage box, a fertilizer box and a water tank are provided, and a quantitative seeding device is provided at the outlet of the storage box, and a ditching plowshare is fixed on the left side of the storage box at the bottom of the fixed plate, and a plowshare is fixed at the bottom of the fertilizer box. A screw is provided on the pipe, and the screw is rotatably connected to the discharge pipe, and a reverse plowshare is connected to the bottom end of the fixed plate on the right side of the discharge pipe, and a soil pressing device is provided on the right side of the reverse plowshare. There is an opening at the connection between the right end of the plate and the connecting beam, and a shunt pipe is fixed on the top of the fixed plate on the left side of the opening, and a plurality of nozzles are fixedly connected to the bottom of the shunt pipe. This device can realize ditching, sowing, fertilization, and soil filling. , watering, the whole sowing process is completed at one time, it can be sown in a large area, the planting benefits are good, and it is worth promoting.