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This invention discloses a bolt tightening climbing platform, comprising a universal main unit and at least two clamping devices, at least one of which is capable of reciprocating along the universal main unit. Each clamping device includes a mounting base and a pair of gripper structures. Each gripper structure includes a gripper fixing plate, on which a clamping slide plate is slidably mounted. A flipping hook is hinged to the first end of the clamping slide plate, and a flipping drive mechanism is provided between the rotating hook and the clamping slide plate. A slide plate drive mechanism is provided on the gripper fixing plate. The two gripper fixing plates are mounted on the mounting base, the sliding directions of the two clamping slide plates are perpendicular, and the ends of the two rotating hooks are bent towards the center. The universal main unit is equipped with bolt tightening devices. The advantages of this invention are: good clamping stability and reliability, adaptability to tightening operations of bolts of different specifications, strong adaptability, and wide applicability.