The invention discloses a metal round pipe continuous conveying machining device, and belongs to the field of mechanical workpiece machining equipment. A round pipe guide storage pipe and a guide pipeinclined table plate are sequentially and fixedly mounted on the upper side of a round pipe conveying support in the inclined direction, a guide pipe driving mechanism and a round pipe guide conveying mechanism are sequentially mounted at the position, on the upper side of the guide pipe inclined table plate, of the round pipe conveying support from top to bottom, a round pipe machining mechanismis fixedly mounted at the position, above the lower end of the guide pipe inclined table plate, of the round pipe conveying support, a round pipe positioning mechanism is horizontally and fixedly mounted on the lower side of the end of the guide pipe inclined table plate, and a round pipe falling mechanism is fixedly and vertically mounted at the position, on the lower side of the round pipe machining mechanism, of the round pipe conveying support. Structural design is reasonable, a metal round pipe can be efficiently and stably guided and conveyed continuously to be punched, the machined round pipe can be conveniently, rapidly and smoothly conveyed and discharged, automatic and accurate machining of the metal round pipe can be achieved, machining efficiency and machining quality of the metal round pipe can be improved, and needs of production use can be met.