An illumination tool contains: a body, an extension assembly, and a mirror assembly. The body includes an accommodation mount having a light emitting element which facing to a first direction, the body also includes a magnetic sleeve. The extension assembly couples with the body, and between the extension assembly and the body is defined a rotation structure. The mirror assembly includes a fitting portion, a holder and a first mirror which both face to a second direction. The holder has an L-shaped channel, a first end of the channel corresponds to the accommodation mount, such that the lights illumes into the channel from the first direction, a second end of the channel curvedly extends to the second direction. The channel has a second mirror for reflecting the lights out of the second end of the channel in the second direction from the light emitting element in the first direction.