Cable pulley of crane

The utility model discloses a cable pulley of a crane, which belongs to the technical field of the cranes. The cable pulley comprises a bracket, pulleys, a first clamping device and a second clamping device, wherein the pulleys are arranged on the bracket in a rotating way; the first clamping device is arranged below the bracket and is used for clamping a first group of cables; and the second clamping device is arranged on the bracket and below the first clamping device and is used for clamping a second group of cables. The cable pulley can effectively separate communication cables from power cables when used, avoids magnetic fields of the power cables interfering with the communication cables and ensures the normal work of the crane.