The invention discloses a climbing anti-falling device for a power test. The climbing anti-falling device comprises a base, wherein an accommodating tank is arranged at the upper part of the base; a storage battery pack and a clump weight are arranged in the accommodating tank; a vertical frame is arranged at one side of the top of the accommodating tank; a switch pressing plate is arranged on the vertical frame; a slide way is arranged at the other side of the top of the accommodating tank; the slide way is provided with a reducing motor in a sliding manner; the reducing motor is matched with a winding wheel; an annular sleeve is arranged at one side of the reducing motor and connected with the switch pressing plate through a reset spring; a normally closed switch is arranged in the annular sleeve; a multi-stage oil cylinder is also arranged at the upper part of the base; a pulley is arranged at the top of the multi-stage oil cylinder; a sling is wound on the winding wheel; and a fixed device is arranged at one end of the sling. The climbing anti-falling device for the power test is convenient to move and simple in operation and plays an effective anti-falling role, the personal safety of a climbing worker can be protected, and the security of power test operation is improved.