Hook wrench

The utility model relates to the field of mechanical tools, and discloses a hook head spanner which comprises a handle and a hook head connected with the handle, one end of the handle is in an arc shape, a U-shaped groove is formed in the side face of the arc shape, and one end of the hook head is inserted into the U-shaped groove and rotationally arranged on the handle through a rotating shaft. A clamping column is arranged at the other end of the hook head, the clamping column comprises a cylinder and a step column in shape, and a hexagonal prism is arranged at the top of the step column. According to the hook wrench, the clamping column can be clamped in the groove of the wrench for clamping a bolt and a screw, so that the wrench is prevented from sliding relative to the clamped bolt, the clamped screw and the like; secondly, the hook head part of the wrench can rotate and can be adjusted according to the size of a clamped object, and the application range is wide; the clamping columns are detachably conne