To quickly fix chain guides in a casing of an internal combustion engine by reducing a space.

These chain guides 42, 44 for a control shaft driving device of an internal combustion engine are provided with a side wall composed of a base body 46 and a sliding lining body 48, and in the shape of arranging means 56, 58 for fixing the chain guides to a casing part of the internal combustion engine in the base body, the base body 46 is provided with a pin 58 as a fixing member, and the pin engages in a form connecting manner with the inside of a cutout 68 of the casing part 70 of the internal combustion engine in an assembling state of the chain guides 42, 44.