The utility model discloses a monitoring device for electric power information in the technical field of monitoring devices. Monitoring box, a flashing board is arranged at the top end of the monitoring box body; two sets of heat dissipation partition plates are sequentially arranged in an inner cavity of the monitoring box body from top to bottom. Two groups of supporting legs are symmetrically arranged on the outer wall of the bottom of the monitoring box body; a mounting base is arranged at one end, far away from the monitoring box body, of each supporting leg; two groups of connecting grooves are symmetrically formed in the outer wall of the top of the mounting base; the supporting legs are inserted into the connecting grooves; retraction by return spring, the insertion rods are inserted into the insertion holes, so that the supporting legs are connected with the connecting grooves, a user can conveniently mount the monitoring box body on the mounting base, the mounting difficultyis reduced, the working efficiency is improved, the positioning blocks are inserted into the positioning grooves, the positions of the limiting rods are fixed, the insertion rods are connected with the insertion holes more stably, and the mounting stability of the monitoring box body is improved.