A rotating motor shaft voltage measuring rod comprises a first segment of rod body, a second segment of rod body, an anti-skidding insulating handle and a binding post. The second segment of rod body is in a long cylinder shape, the lower end of the second segment of rod body is sleeved with the anti-skidding insulating handle, and the top face of the second segment of rod body is provided with the first segment of rod body. The first segment of rod body is in a long cylinder shape, the lower end of the first segment of rod body is respectively provided with an upper hole and a lower hole, and the binding post is arranged in the lower hole. The rotating motor shaft voltage measuring rod further comprises a rod head, the top face of the first segment of rod body is provided with the conical rod head, and the upper end of the first segment of rod body is internally provided with a cylindrical metal piece. The bottom of the metal piece is connected with a wire, the other end of the wire penetrates through the upper hole to be connected with the binding post, the lower end of the first segment of rod body is internally provided with a tail metal pin, and the upper end of the second segment of rod body is internally provided with a head metal pin. The rotating motor shaft voltage measuring rod is simple in structure, convenient to manufacture, long in service life, safe and reliable in the using process, and easy to store and transport.