The utility model discloses a clamp for power transmission line maintenance. The device comprises two clamping plates which are oppositely arranged in the vertical direction, the front side, the rearside and the left side of the left end between the two clamping plates are connected through connecting plates, the front sides of the left ends of the two clamping plates extend forwards to form extending plates respectively, a connecting rod is vertically arranged between the two extending plates, and threaded holes are formed in the right ends of the two clamping plates respectively and oppositely arranged in the vertical direction; The triangular yoke plate of the clamp is arranged between the two clamping plates, a bolt penetrates through the threaded holes of the two clamping plates to be locked, tools such as a lever block and the like are hung on the connecting rod, use is convenient, the structure is simple, firmness and reliability are achieved, and the operation standard can beenhanced.