The invention provides a novel water pump control valve which comprises an annular valve body, seal rings, big valve plates, a main shaft and a small valve plate. A water inlet end by-pass mouth and a water outlet end by-pass mouth are respectively arranged on two ends of the valve body. A groove is arranged in the inner wall of the valve body and between the water inlet end by-pass mouth and the water outlet end by-pass mouth. The main shaft deviates from the center of the valve body and penetrates through the groove. One end of the main shaft is fixed on the inner wall of the valve body through a bearing, and the other end of the main shaft penetrates out of the valve body and is connected with a control mechanism. The big valve plates are supported on two fixing circular bosses of the inner side of the annular valve body and capable of rotating around the circular bosses. The seal rings are arranged on the outer sides of the big valve plates. A plurality of baffles are arranged in the inner sides of the big valve plates. The big valve plates can seal one side, close to the water inlet end by-pass mouth, of the groove. The novel water pump control valve has the advantages that structural size is short and small, control pipeline is simple, valve close and seal effect is good, and water hammer phenomenon is not prone to occurring.