The invention provides a steel wire rope rotation preventing device applied to a container crane. The steel wire rope rotation preventing device applied to the container crane comprises a movable trolley. Two identical steel wire rope assemblies are arranged at the two ends of the movable trolley respectively. The two steel wire rope assemblies are connected through a connecting pull rod. By the adoption of the steel wire rope rotation preventing device, the problem of rotation of a lifting steel wire rope can be solved easily, conveniently and reliably, the equipment maintenance time is shortened, and the operation safety and reliability of the whole crane are improved.