The invention discloses a motor capable of realizing on-line self-maintenance, include a motor body, A metering oil fil device and a self-powering mechanism, the dosing oil filling device comprises anoil filling motor, the self-powering mechanism comprises a magnet fixing disk and a coil winding, the magnet fixing plate is interference-connected with the rotating shaft between the bearing and theouter end cover of the bearing, wherein the magnet surface of the magnet fixing disk and the inner side of the bearing outer end cover are slidably connected, the back surface of the magnet fixing disk and the outer end face of the bearing are gap connected, and the coil winding is fixed on the inner side of the bearing outer end cover opposite to the magnet surface of the magnet fixing disk; Anelectric cavity is arranged on the outer end cover of the bearing, and a main control single-chip microcomputer and a circuit module are arranged in the electric cavity. The circuit module is respectively connected with the main control single-chip microcomputer and the oil filling electric machine, and the main control single-chip microcomputer is communicated with the oil filling motor. The invention can automatically fill the bearing with lubricating oil or other liquid lubricant periodically and quantitatively, and realizes the on-line self-maintenance of the motor.