The invention discloses an intelligent fire-extinguishing robot for an electric power tunnel. The intelligent fire-extinguishing robot comprises a box body, a control device, an ultrasonic sensor and a wireless receiving device are installed inside the box body, the bottom of the box body is open, and a track walking mechanism is installed at the upper end of the box body; and two second bearing plates are arranged inside the box body and divide a cavity of the box body into a middle cavity and two side cavities, the two side cavities are located at the left side and the right side of the middle cavity respectively, a clamping mechanism is installed inside each side cavity, the two clamping mechanisms are distributed at the left side and the right side of the middle cavity symmetrically, a bomb throwing device is installed inside the middle cavity, a first bearing plate is vertically arranged inside each side cavity and is provided with a first strip-shaped groove, and each second bearing plate is provided with a second strip-shaped groove. The intelligent fire-extinguishing robot can reach sites at high speed and extinguishes fire according to instructions controlled by commanders at the far end. The intelligent fire-extinguishing robot has the advantages that the structure is simple and compact, the manufacturing cost is low and use is easy and convenient.