The utility model discloses a cable elbow head disassembling tool. The cable elbow head disassembling tool comprises an operation handle. One end of the operation handle is provided with an arc buckle hook. The buckle hook end of the operation handle is connected with a bicycle chain-shaped buckle chain. Chain apertures in the buckle chain can be buckled and hung in the buckle hook of the operation handle. According to the cable elbow head disassembling tool, after the buckle hook end of the operation handle is connected with the bicycle chain-shaped buckle chain, cable elbow heads can be disassembled through closed loops formed through hanging the chain apertures in the buckle chain on the buckle hook on the operation handle, and the sizes of the closed loops can be adjusted to adapt different models of cable elbow heads through adjusting the hanging positions of the buckle hook and the buckle chain, so that the problems that in the current operation, tools are replaced troublesomely or the tools are not matched are solved, and construction efficiency is greatly improved.