PURPOSE: To provide a small polishing device which performs the mirror face machining processes of an optical connector end face, i.e., processes for rough polishing including the excess length cut of an optical fiber end, finish polishing and buff polishing, in tandem, requires only one worker, and allows stable machining.

CONSTITUTION: A loader section 3, a grinding/polishing section 4, a finish polishing section 5, a buff polishing section 6, and an unloader section 7 are installed on a frame 1. A fitting base 8 is provided at a constant pitch P, and a removable handling jig 2 is fitted. A vertically/horizontally reciprocating chuck 9 is provided on a conveying device 10 for conveyance and machining in all processes. After all processes are completed, the handling jig 2 is returned to the loader section 3 for re-use. The jig 2 precisely positions and fixes an optical connector with the spring force.