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.【課題】保定器内で、前後に移動可能な隔壁による霊長類の拘束の際、その四肢の付け根の損傷の原因となる隔壁の格子の縦棒との摩擦を軽減することで、このような損傷を低減ないし解消する。【解決手段】両側面と頂面と底面とを有する収容体20と、収容体20の背面側を開閉可能な背面扉50と、収容体20の内部を前後に移動可能に形成され、収容体20の内部の所望の位置で固定可能に形成された隔壁30とを有する霊長類の保定器10において、隔壁30の縦棒部材31のうち、霊長類の四肢を正面方向へ突出させて保定する際に、その四肢の付け根部分が当接する箇所に、保護筒33がその縦棒部材31に対して回転可能に外挿されている。【選択図】図1