Integrated cooker capable of preventing oil smoke from flowing back

The utility model relates to the technical field of integrated stoves, in particular to an integrated stove capable of preventing oil smoke from flowing back, which comprises a case, a smoke control box, a screw rod, a hollow shaft, a flow guide cover and a fan. A smoke collecting hood is arranged on the case, and a lower smoke pipe is arranged at the bottom of the smoke collecting hood. The other end of the lower smoke pipe is inserted into a flow guide pipe on the side of the smoke control box, and an oil collecting box is slidably arranged in the smoke control box. The screw is rotatably arranged in the flow guide pipe and is in clearance fit with the inner wall of the flow guide pipe, the hollow shaft is arranged in the conical groove, and a sealing plate is slidably arranged on the hollow shaft and located above a pipe opening of the flow guide pipe. A rotating shaft is rotationally arranged in the hollow shaft, a one-way rotating impeller is arranged at the top end of the rotating shaft, and the rotatin