The invention relates to a louvered water-blocking drain grating grid-plate for a pump station. The louvered water-blocking drain grating grid-plate for the pump station comprises a grid-plate body and a grid-plate shaft, wherein the grid-plate body is arc and long strip-shaped; the grid-plate shaft is arranged on the upper edge of the grid-plate body; the two ends of the grid-plate shaft protrude out of the grid-plate body by a certain length, and a bearing is arranged at each of the two ends; a gear is arranged on the outer side of the bearing at either end of the grid-plate shaft. According to the invention, a plurality of the grid-plates are transversely arranged on the left and right pier walls through the shafts; all the grid-plates are connected with a grid-plate switching mechanism arranged on one of the pier walls; when the grid-plate switching mechanism is rotated clockwise, the grid-plates are rotated upwards to be opened and guide water, and the plurality of grid-plates form a drain grating to stop sundries from passing; when the grid-plate switching mechanism is rotated anticlockwise, the grid-plates are rotated downwards to be closed and form a gate to stop water flow from passing. Through the adoption of the louvered water-blocking drain grating grid-plate, land is saved, the project cost is reduced, and sundries can be blocked from entering during water pumping, and the grid-plate can be used as a gate for blocking water during maintenance.