The invention discloses a conveying device which is novel in structure, capable of meeting production line work, time-saving and labor-saving and convenient for operation. The conveying device comprises a driving conveying component and a driven conveying component; a conveyer belt is arranged on the driving conveying component and is controlled to be started and stopped by a controller on the driving conveying component; multiple round rolls are uniformly distributed on the driven conveying component along the length direction; during use, at least two workpieces are placed on the driving conveying component; the workpieces move to the driven conveying component through the conveyer belt of the driving conveying component; and the workpiece behind pushes the workpiece ahead to move on thedriven conveying component. According to the conveying device, a combined conveying device is adopted; the lengths of the conveying components can be freely adjusted according to the length of a working space; furthermore, work of multiple working procedures can be ensured during work of a production line; labor and material resources are saved; and production efficiency is improved.