The invention discloses a bending cutting machine of a reinforcing steel bar. The machine comprises a motor equipped with a gearbox, a bending mechanism, a cutting mechanism, a steering mechanism, a control circuit and a rack; a workbench equipped with an indexing turntable is arranged on the bending mechanism; a rotating axis of the indexing turntable is connected with a vertical shaft of a steering transmission mechanism below the workbench; a plurality of indexing holes are formed in the circumference of the indexing turntable; a fixed bending column and a movable bending column are arranged on the indexing turntable, wherein the fixed bending column is positioned on the center of a circle of the indexing turntable; sleeves are arranged at the outer sides of both the fixed bending column and the movable bending column; two ejecting column inserting parts are respectively arranged on two corners at one side of the workbench; ejecting preventing protecting round columns or fixing blocks are arranged at the four ejecting column inserting parts. According to the bending cutting machine of the reinforcing steel bar, an automatic braking system, a safety button and a foot brake are matched to work to reach two-directional rotating, and thus the accuracy, fast speed and safety of iron bending are ensured.