The present invention reduces or eliminates injuries such as those to the base of the limbs of a primate in a restrainer caused by friction with vertical bars in the grid of a barrier that is movable in a front-back direction, by reducing the friction when using the barrier to restrain the primate. A restrainer (10) for primates has: a storage body (20) having two side surfaces, a top surface, and a bottom surface a rear surface door (50) which can open and close the rear surface side of the storage body (20) and a barrier (30) that is formed so as to be movable inside the storage body (20) in a front-back direction, and that is formed so as to be fixable at a desired position inside the storage body (20). Protective tubing (33) is rotatably inserted onto vertical bar members (31) of the barrier (30) at locations on the vertical bar members (31) where the base parts of the limbs of a primate would make contact when the limbs of the primate are extended in the frontal direction and restrained.
