The invention discloses a power device conveying device which comprises a front conveying mechanism and a rear conveying mechanism. The two conveying mechanisms are connected through a first hydrauliccylinder. Each conveying mechanism comprises a slide device, a power device, a second hydraulic cylinder and at least two slide rails. The front slide rail and the rear slide rail are in parallel. The first hydraulic cylinder is fixed between the front slide rail and the rear slide rail. The second hydraulic cylinder is arranged at the right end of one slide rail. A baffle is arranged on the leftside of the other adjacent slide rail on the right side. The telescopic end of the second hydraulic cylinder is correspondingly connected with the baffle. The slide device comprises a guide wheel support and a guide wheel. The guide wheel support is fixed to the upper surfaces of the slide rails. The guide wheel is fixedly connected to the guide wheel support through a rotating shaft. The power device comprises a motor. The motor is fixed to the upper surfaces of the slide rails. An output shaft of the motor is correspondingly connected with the rotating shaft. Labor is greatly saved, work efficiency is improved, operation is convenient, and practicability is high.