To provide the guide of a portable electric cutter for the purpose of performing the inclined cutting operator of the portable electric cutter to perform inclined cutting work capable of accurately performing the inclined cutting of a material to be cut by arranging the guide detachable with respect to the bottom surface of a base and excellent in operability and workability.

A guide part 9 having a guide surface 9c or guide surfaces 9a, 9b and 9c is hooked with both ends of a base 3 by a guide hooking part 9d and a hook 11, and the guide is fixedly attached to the bottom surface 3a of the base 3 of the portable electric cutter by a bolt (B) 10 through a sleeve 12 and a spring washer 13.