The hydraulic press brake machine has high strength and good rigidity. The hydraulic bending machine adopts the overall steel plate welding structure, which has high precision and high stability. Using upper and lower molds of different shapes, through multiple bending, workpieces of various shapes can be bent with high precision. The hydraulic press brake machine has reliable safety performance and high positioning accuracy. The slider stroke and back gauge distance can be quickly adjusted by the motor, manually fine-tuned, and displayed by the counter.