A holder capable of protecting an optical connector ferrule from an external shock, or the like and executing a fusion-splice of a short optical fiber not to take out the optical connector ferrule from the holder is obtained.A holder for holding a connector plug equipped with an optical connector ferrule to which a short optical fiber is fitted and a plug frame for covering an outer periphery of the optical connector ferrule therein, wherein, when the short optical fiber together with the holder is fitted to a fusion splicing apparatus that fusion-splices the short optical fiber and other coated optical fiber, the short optical fiber extended from the plug frame is positioned in a fusion position.