The invention discloses a manipulator, belongs to the technical field of manipulators and solves the problem that a bolt of a current manipulator is inconveniently arranged. The manipulator comprises a base and an arm rotatably arranged on the upper side of the base by taking a first axis as a center. The manipulator is characterized in that the arm is provided with a vertically through first hole which is vertically formed, the base is provided with a second hole which is vertically formed, the second hole is positioned under the arm, and the vertical distance between the first hole and the first axis is approximately equal to that between the second hole and the first axis. According to the manipulator, as the first hole corresponding to the second hole in the base is formed in the arm, a bolt on the base is conveniently arranged.