To provide a fixture for drive shaft boot capable of easily and rapidly performing a boot installation operation by allowing half-divided bodies to be easily connected to each other without extra labor.

A holding groove 2 detachably fitted onto the outer surface of the drum part 7 of a drive shaft boot B from the direction orthogonal to the center axis thereof is provided in a flat plate-like fixture body 1. The holding groove 2 is formed into such a tapered shape that the inlet part 2a side is wide and the bottom end part 2b side is narrow. The half-divided bodies 3a and 3b of the drive shaft boot B are fitted between a drive shaft 32 and the joint part 31 of a wheel 30 from both sides and, with the divided end faces 4a and 4b allowed to abut on each other, the holding groove 2 is fitted onto the outer surface of the drum body part 7 of the drive shaft boot B.