The utility model relates to a high-pressure high-flow water pump. A high-flow bypass and a high-pressure bypass are arranged on the two sides of a main path in a pump body, wherein the high-flow bypass is composed of a two-stage venturi throttle valve group and a high-flow bypass valve group, the two-stage venturi throttle valve group is arranged in a cavity of the main path, a vacuum cavity is formed in the valve body of a venturi valve of the two-stage venturi throttle valve group, a primary throttle hole is formed in the inlet end of the vacuum cavity, a secondary throttle hole is formed in the outlet end of the vacuum cavity, a high-flow suction hole is formed in one end of the inner wall of the vacuum cavity, the vacuum cavity is connected with a water outlet of the high-flow bypass valve group beside the main path through the suction hole, and a one-way valve group is installed in the high-flow bypass valve group; the high-pressure bypass is located on the other side of the main path, a water inlet of a high-pressure bypass valve is connected with a water inlet of the two-stage throttle venturi valve, a water outlet of the high-pressure bypass valve is communicated with a water outlet of the two-stage throttle venturi valve, and a one-way valve group is installed in the high-pressure bypass valve. The high-pressure high-flow water pump is simple in design and structure and convenient to manufacture, the cost of the high-pressure high-flow water pump is far lower than that of similar products, and actual operation is convenient and efficient.