The invention discloses a device and a method for additionally hanging an optical fiber cable hook without pole climbing. The device comprises an insulating rod and an operating head, wherein the operating head is arranged at the top of the insulating rod, and comprises a base, a rotating block and an operating block; the rotating block is movably mounted on the base; the operating block is mounted on the rotating block, that is, one end of the operating block is mounted on the rotating block through a transverse rotating shaft, and the other end of the operating block is connected with the upper surface of the rotating block through a spring; an arc-shaped side wall is arranged on the base; an irregular groove is formed in the arc-shaped side wall; a corresponding operating handle is arranged on the operating block, and can slide along the irregular groove. Through the adoption of the device and the method, the optical fiber cable hook can be convenient to additionally hang; the device and the method are high in efficiency, low in cost, and high in safety factor.