The utility model discloses a ladle crane with the structure of two trolleys and two main beams, which comprises trolleys and main beams, wherein the two trolleys comprise a main lifting trolley and an auxiliary lifting trolley, and the auxiliary trolley is arranged on the main lifting trolley. The two main beams are parallelly arranged, and the main lifting trolley is arranged on the two main beams. The two main beams are connected through middle end beams which are arranged at two ends of the two main beams. A track is arranged on the main lifting trolley, and the auxiliary lifting trolley is arranged on the track of the main lifting trolley. The main lifting trolley and the auxiliary lifting trolley share a set of trolley cable conductive device. The middle end beams and the main beams are hinged together, and the middle end beams are small-case type end beams. The ladle crane with the structure of two trolleys and two main beams lightens dead weight of the complete machine, the trolley span of the main trolley can be reduced, and the width of the complete machine can be reduced, thereby optimizing space utilization of workshops, enabling the complete machine to be more practical and easier and obviously lowering manufacturing cost.