Anti-theft cable barrel for building hoist

The utility model discloses an anti-theft cable barrel for building hoist. The anti-theft cable barrel comprises a barrel body and a barrel cover; the barrel cover is welded to one end of a cable arm of a building hoist; and a round tube connected with the end of the cable arm of the building hoist and used for penetrating of cables is disposed at the bottom of the barrel cover. The anti-theft cable barrel is reasonable in structure; the cable barrel cover and a section of round tube used for penetrating of the cables are welded to the end of the cable arm, and the cable barrel cover right covers the cable barrel body and the round tube extends into the cable barrel body when the hoist stops on the ground, so that the cables are effectively prevented from being stolen in the absence of a hoist key and under the condition that the hoist does not ascend.