The invention relates to a stubble-cleaning precise sowing tiller, which comprises a sowing tilling mechanism, a stubble cleaning mechanism and a traction mechanism, wherein the traction mechanism is a small tractor, the sowing tilling mechanism comprises a machine frame, an upper grid pressing wheel assembly, a bottom grid pressing wheel assembly, a plough share assembly, a hook opener, a power driving wheel, a sowing tank assembly and a fertilizing tank assembly, the stubble cleaning mechanism comprises a gearbox and a knife roller, the gearbox is provided with a power input shaft and a knife roller shaft, the power input shaft is provided with a passive belt wheel, the power output shaft of the tractor is provided with an active belt wheel, the passive belt wheel is connected with the active belt wheel through a belt, the knife roller is arranged on the knife roller shaft, and the knife roller shaft is provided with a stubble cleaning knife. The tiller has the advantages that the labor strength is reduced, the tilling efficiency is improved, the farming time is not delayed, and the tilling quality and sowing quality are ensured.