Vertical hydraulic jack

The utility model discloses a vertical hydraulic jack. The vertical hydraulic jack solves the problem that a piston rod of a hydraulic jack in the prior art rusts easily and has potential safety hazards. The jack comprises a case, a base, a first oil cylinder, an oil storage cavity, a first piston rod, an adjusting screw rod, an oil return valve rod, a second oil cylinder, a second piston rod and a handle installation part. The oil return valve rod is arranged on the base and communicated with the oil storage cavity through an oil way. The second oil cylinder is arranged on the base, located on one side of the first oil cylinder and communicated with the first oil cylinder and the oil storage cavity. The second piston rod is arranged in the second oil cylinder. The handle installation part is connected with the top of the second piston rod. The upper portion of the case is inclined towards the axis direction of the case, so that the section of the case is of a trapezoidal structure. The first piston rod and the second piston rod are provided with chrome coatings. The first oil cylinder and the bottom edge of the case are connected with the base into an integrated structure in a welding and fastening mode. A magnet used for attracting iron filing particles contained in hydraulic oil is arranged in the oil storage cavity. The vertical hydraulic jack is simple in structure, convenient to realize, low in cost, convenient to maintain and high in safety factor.