The invention discloses a power switch cabinet with a directional fire extinguishing function. The power switch cabinet comprises a cabinet body, wherein a plurality of connecting plates are uniformly arranged on the inner wall of the middle part of the cabinet body; a plurality of power switches are uniformly arranged on the connecting plates; wiring terminals are respectively arranged at the two ends of each power switch; slide rails are vertically arranged on the inner walls of the two sides of the back end of the cabinet body; a slide plate is horizontally arranged at the back end of the cabinet body and is matched with the slide rails; a bulge is arranged at one end of the slide plate, and a hydraulic cylinder is horizontally arranged at one side of the bulge. The power switch cabinet has the advantages that a high-pressure spray head is controlled by a driving motor and a bidirectional screw rod to move along the vertical direction, and is controlled by a hydraulic cylinder and a piston rod to move along the horizontal direction, the high-pressure spray head can be quickly and accurately moved to the fire location, the enough liquid carbon dioxide is sprayed to extinguish the fire source, and the influence to the other positions of the cabinet body is reduced; by adopting the combination of a rotary shaft and a groove which is in a shape like Chinese character of hui, a cabinet door is slide along the groove in the shape like Chinese character of hui, the space occupation is reduced, and the convenience in use is realized.