The utility model relates to a moment test device technical field especially relates to a manipulator moment test device, the manipulator adapter keyway and bottom and torque sensor top be connected is seted up including torque sensor, bite frock, support and top, the bite frock includes the shell body be connected in the top and the bottom of torque sensor, sets up rotary mechanism and bolt in the shell body, and the screw hole that is used for the spiro union bolt is offered respectively to the both sides at shell body top, and the bolt head of bolt lies in the shell body, the rotary mechanism top is two be provided with horizontal boss between the bolt head of bolt, the rotary mechanism bottom detachably install in the bottom of support. The utility model discloses connect simple and conveniently, need not to change the original structure of manipulator, and need not personnel manually operation bite frock, avoid the human factor influence, ensure the experimental accuracy of moment.