A concrete pump truck is a mechanical device that uses pressure to continuously transport concrete along a pipeline. Composed of a pump body and a conveying pipe. According to the structural form, it can be divided into piston type, extrusion type, and water pressure diaphragm type. The pump body is mounted on the chassis of the car, and then equipped with a stretchable or foldable fabric rod to form the pump truck. The concrete pump truck transmits the power of the engine to the hydraulic pump group or rear axle through the power transfer case. The hydraulic pump pushes the piston to drive the concrete pump to work, and uses the fabric rod and conveying pipe on the pump truck to transport the concrete to a certain height and distance.