The present invention discloses a turning tool cutter row device of a combined working machine tool of a milling machine, which relates to a turning tool cutter row device and solves the problems that the existing combined working machine tool of the milling machine cannot realize automatic clamping and changing of turning tool cutters during the conversion of a milling process step and a turning process step so that the automation degree of the combined working machine tool of the milling machine is influenced and the production efficiency of the combined working machine tool of the milling machine is reduced, wherein one lateral surface, along the length direction, of a cutter row main body is provided with four vertical grooves; the same upper end face, on two sides of two vertical grooves positioned at the end part, of the cutter row main body are provided with a cutter hole; a cutter handle is arranged in the middle of the upper end face of the cutter row main body; the big end of the cutter handle is connected with the upper end face of the cutter row main body; a cutter row positioner is arranged on the upper part of the cutter row main body; the cutter handle is positioned in an inner cavity of the cutter row positioner; and the lower end face of the cutter row positioner is connected with the upper end face of the cutter row main body. The turning tool cutter row device changes the turning tool changing mode and the turning tool fixing mode of existing like products, and improves the production efficiency.