The invention relates to a device for fixing a pilot rope ladder, an accommodation ladder lower platform and a ship outer board, and belongs to the technical field of ship manufacturing. The device for fixing the pilot rope ladder, the accommodation ladder lower platform and the ship outer board is characterized by comprising a framework (9), wherein the framework (9) is fixedly provided with at least two electromagnets (6), the two electromagnets (6) are positioned in the same plane, the upper part of the framework (9) is provided with at least one pair of rope ladder binding holes (7) with binding locks, the lower part of the framework (9) is provided with at least one accommodating ladder binding hole (8) with a binding lock, the framework (9) is also provided with a protection box (11), the inside of the protection box (11) is stored with a storage battery or an external electric wire, the storage battery or the outer electric wire is connected with the electromagnets (6), and the bottom of the framework (9) is also provided with a height indication panel (10). When the device is used, the lower edge of the height indication panel (10) is flush with the height of the accommodation ladder lower platform.