The utility model discloses a tool for treating strip breakage of cold-rolled strip steel, belonging to the technical field of a rolling technology of a cold-rolled plate and strip. The tool comprises a jackscrew, a clamp body, a hanging ring and a pin shaft, wherein a through hole is formed in the middle on one side of the clamp body; the jackscrew is fixedly connected with the clamp body through the through hole; a counter bore is formed in the other side of the clamp body; the top end of the clamp body is provided with a connecting hole; and the pin shaft penetrates through the two sides of the hanging ring and the connecting hole respectively, so that the hanging ring is movably connected with the clamp body. According to the tool, a firm connection mode is formed between the strip steel and a hanger; and compared with the conventional fixation mode, the tool has the advantages of easiness and convenience in operation, high efficiency, firm connection and no deformation of the strip steel.