The structure of DBD series electric oil pump is a valve-distributed axial quantitative plunger pump, which is combined with a control valve, oil tank, and motor instrument to form an independent hydraulic power device. When the pump is equipped with a single-acting oil cylinder or various special machines, it can realize lifting, bending, straightening, extrusion, shearing, riveting, dismantling, pile pressing and other work requirements. The pump can also be installed in other mechanical equipment as a hydraulic power component, and can also be used as a pressure test pump for various medium and high pressure series hydraulic components, high pressure containers, and high pressure rubber hoses.