Multifunctional water pump control valve is installed in the high-rise building water supply system and other water supply system of the pump outlet, prevent the backflow medium, water hammer and the intelligent valve water hammer phenomenon. The valve has three functions of electric valve, reverse stop valve and water hammer eliminator, which can effectively improve the safety and reliability of water system. The technology principle of slow opening, fast closing, slow and closing water hammer is integrated to prevent the production of pump water hammer and stop pump water hammer. Open/close button simply operating pump motor, the valve can be in accordance with the pump operating rules automatically opening and closing, large flow, small pressure loss, the diaphragm type is suitable for below 600 diameter of the valve.