The utility model relates to the technical field of numerically controlled lathes, and discloses an automatic material pulling device of a common numerically controlled lathe, which comprises an L-shaped numerically controlled lathe and a connecting seat, and a horizontal plate of the connecting seat is a U-shaped horizontal plate. The utility model discloses an automatic material pulling device of a common numerically-controlled lathe. A relay, a two-position five-way electromagnetic valve and a throttle valve are arranged in a common numerical control lathe control cabinet; compiling a machining auxiliary control program NC program and a functional bottom layer PMC program; the automatic material pulling device is fixedly connected with a dragging plate of the numerical control lathe; the cutter position is not occupied; the automatic material pulling device of the common numerical control lathe is controlled through a numerical control program, blank bars and pipes are automaticallypulled out of the three-jaw chuck to the needed size, the common numerical control lathe can continuously machine workpieces, and therefore the part machining efficiency and the automation degree areimproved, and the labor intensity of operators is reduced.