The invention relates to the technical field of steel bar machining equipment and discloses a steel bar bender. The steel bar bender comprises a workbench. The workbench is provided with a rotary table and a positioning block. The rotary table is eccentrically provided with a movable bending pin and concentrically provided with a positioning pin. The workbench is further provided with a feeding device. The feeding device comprises a storage frame, a feeding arm, a feeding motor and a feeding slide rail which are all sequentially arranged. The storage frame is arranged on the workbench. Steel bars are sequentially arranged on the storage frame. The feeding motor is arranged on the workbench. One end of the feeding slide rail is arranged near the feeding arm, and the other end of the feedingslide rail is arranged above the positioning block and the positioning pin. The feeding slide rail is obliquely and downwards arranged in the steel bar conveying direction. The feeding motor drives the feeding arm to rotate so that the steel bars on the storage frame can be sequentially sent onto the feeding slide rail. According to the steel bar bender, the feeding device is used for carrying out automatic feeding on the steel bars, the structure is simple, and the labor intensity of workers is reduced.