The invention relates to a cooling water pump for the automobile motor. The cooling water pump comprises a water pump casing body combined with an engine cylinder body, a sealing cavity is formed by the water pump casing body and the cylinder body combined, a water pump
impeller driven by a water pump wheel shaft and a water inlet opening is arranged at the position of the sealing cavity, the water inlet opening is arranged on the engine cylinder body, and two water outlet openings are respectively arranged at the two sides of the water pump casing body. A pressure relief hole is added in the blade inlet opening of the water pump
impeller. The water pump drive adopts double-row
sprocket drive. The water pump is provided with two water outlet openings, thus the flow quantity of the water pump is increased; the water pump
impeller adopts a plastic structure, thus, on one hand, the whole
mass of the water pump is lightened, and the rotational
inertia is reduced; on the other hand, the water pump efficiency is enhanced; and the pressure relief hole is added in the blade inlet opening of the water pump impeller, thus the front and rear
water pressure of the impeller is balanced, the
cavitation erosion surplus is reduced, and the pressure relief hole can also play a cooling and water sealing role. The water pump drive adopts the double-row
sprocket drive, thus, on one hand, the work efficiency of the water pump is enhanced, and on the other hand, the work stability of the water pump is strengthened.