A protective cover of the present invention is adapted to be disposed on a wall-mounted faucet. The protective cover includes a cover plate. Two protruding posts, two abutting posts, and two extension posts vertically extend from one surface of the cover plate. Each distal end of the protruding posts is formed with a location hole. Each distal end of the extension posts is formed with a hook portion. Therefore, the protruding posts and the abutting posts can abut against the wall-mounted faucet so as to make the location hole receive the location shafts of the faucet and make the hook portions abut against the faucet. Thereby, the present invention can be firmly disposed on wall-mounted faucets to provide a protective effect.