A primate restraint device capable of restricting the movement of a monkey and, particularly, capable of facilitating transnasal intragastric administration or oral administration. A primate restraint device comprising: a containing body having both side surfaces, a top surface, and a bottom surface a door provided to the rear surface side of the containing body and capable of opening and closing the rear surface side of the containing body by sliding up and down and a partition wall which is formed so as to close the inside of the containing body from the front surface side and to be movable forward and backward within the containing body and which is configured to be able to be affixed at a desired position within the containing body. Both side surfaces are each formed by combining vertical bar members and horizontal bar members into a grid pattern, and at least some of the horizontal bar members of the side surface are curved downward to form chin support sections on which the chin of the contained primate is supported.
