The invention relates to the field of polishing tools, and discloses an electric end face polishing tool used for a robot. The electric end face polishing tool used for the robot comprises a seal hood, a driving mechanism, a braking mechanism and a polishing disc. The seal hood comprises a shell, wherein a cable connector is arranged on the shell, a first mounting flange is arranged at the lower end of the shell, and a second mounting flange is arranged at the upper end of the shell. The driving mechanism is mounted in the shell by means of the first mounting flange. A heat-conduction layer isarranged between the shell and the driving mechanism. The lower end of the driving mechanism stretches out of the shell and is connected with the polishing disc. The braking mechanism is mounted outside the shell and is used for locking the polishing disc. By adoption of the electric end face polishing tool used for the robot, the problems that an existing robot end face polishing tool is low inpolishing efficiency, cannot continuously work for a long time, cannot adjust the speed easily, and is poor in the dust removal effect are effectively solved; and the electric end face polishing toolused for the robot is an intelligent polishing tool which can achieve automatic speed-adjustable polishing, automatic replacement of abrasive materials, participative collaboration of the robot, and dust removal.