Abstract: A type of dual speed vertical hydraulic jack, including pedestal featuring hydraulic control pressure regulating assembly and oil drain valve assembly; jacket, hydraulic cylinder and pump body fixed on pedestal; oil storage cavity formed between jacket and hydraulic cylinder; piston rod with piston assembly at bottom; top cap, pump core, button, first oil path and second oil path; on bottom of said pump core, a step is provided and constitutes sealing with inner wall of pump cavity, third oil path and fourth oil path are provided on the step respectively, first steel ball valve and second steel ball valve that control connection and disconnection of said pump cavity with third oil path and fourth oil path respectively are provided on these oil paths, and at lower part of pump core, a fifth oil path is provided for connecting third oil path with upper cavity of pump cavity.