The utility model discloses a fastening steel bar sleeve connecting tool. The device comprises a treading part, a supporting part connected to the upper portion of the treading part, and a wrench separated from the supporting part and the treading part, the supporting part is provided with a limiting part used for supporting a reinforcing steel bar, the limiting part is used for supporting one endof the reinforcing steel bar, and the supporting part is connected to the treading part to form a stable operation frame; the supporting part comprises a steel bar temporary placing component and a limiting system, the steel bar temporary placing component is arranged in the middle of the frame and connected with the operation frame through a position adjusting system, and the position adjustingsystem comprises a horizontal moving component and a fastening component, so that perfect combination of moving and fixing is achieved. The wrench properly adjusts the size of the buckle according tothe model of the steel bar, and the wrench buckle is provided with a clamping groove to increase friction with the steel bar. By means of the tool, the operation convenience is improved, the reinforcing steel bar fastening connection efficiency is improved, and manual labor is saved.