The utility model discloses a high -efficient energy -saving pump of n butyl acetate recirculated cooling water, including the water pump vane, blade and leaf axle hole draw water, the vane ring that draws water is installed to the centre of water pump vane, it is equipped with leaf axle hole to draw water vane ring's inside, vane ring's the outside surface mounting of drawing water has seven blades that draw water, the upper surface of blade of drawing water evenly is equipped with groove strip, the connected mode of drawing water the blade and drawing water between the vane ring is fixed connection, seven blades that draw water that the quality is the same with the specification are evenly installed on the vane ring that draws water, draw water the material of blade for cast iron, the utility model discloses upstream face with the blade that draws water of water pump on original basis has increased groove strip, has improved the water pump lift, and simple structure, and reasonable in design has improved the efficiency of drawing water, has reduced the consumption of electric energy, has higher economic benefits and extensive application prospect.