The invention discloses an electric power fire protection tunnel. The electric power fire protection tunnel is characterized by comprising a tunnel body; the two side walls of the tunnel body are provided with a plurality of layers of cable brackets, the cable brackets are of right-angle-triangle shapes, the right-angle edges are fixedly arranged on the two sides of the tunnel body, and the inclined edges of the cable brackets are provided with a plurality of positioning grooves different in sizes; the bottoms of the two side walls of the tunnel body are provided with spare cable storage boxes and overhauling tool boxes, and the outer side walls of the spare cable storage boxes are provided with water-immersed alarm devices; and the top of the tunnel body is provided with a frog alarm device and lighting lamps, the middle of the ground of the tunnel body is provided with a drainage ditch, the upper side of the drainage ditch is provided with a cover plate with filtering holes, and the upper portion of the tunnel body is provided with a fire extinguishing device. The electric power fire protection tunnel has the functions of water seepage alarming and fire disaster alarming and is high in strength and not prone to deformation; and the blocked vision between one layer and another layer is small, observation and overhauling of overhauling personnel are facilitated.