A device for assisting equipment restoration work, comprising: a restoration work information storage unit configured to store work items for restoration and priority information, the work items being set in advance for each location at which an abnormality is expected to occur in equipment to be managed, the priority information indicating a priority of execution for each of the work items; a state information acquisition unit configured to acquire state information of a predetermined location of the equipment; characterized by the device comprising: a restoration assist information generation unit configured to generate, when it is detected that an abnormality has occurred in the equipment and an operation of the equipment has been stopped, restoration assist information, in which the work items for restoring the equipment are arranged in an order of execution according to the priority information, based on information of a location at which the abnormality has occurred and the information stored in the restoration work information storage unit; and a restoration assist information update unit configured to determine whether a work item that has already been executed needs to be executed again, to rearrange the work items in the order of execution according to the priority information set for the work items determined to be necessary to be executed, and to update the restoration assist information generated by the restoration assist information generation unit to restoration assist information including the work item that has already been executed and determined to need to be executed again and the work items that have not been executed, and excluding the work item that has already been executed and determined not to need to be executed again, when it is detected that a state of any location in the equipment has changed based on the state information acquired by the state information acquisition unit during a restoration work based on the restoration assist information. a restoration work information storage unit configured to store work items for restoration and priority information, the work items being set in advance for each location at which an abnormality is expected to occur in equipment to be managed, the priority information indicating a priority of execution for each of the work items; a state information acquisition unit configured to acquire state information of a predetermined location of the equipment; characterized by the device comprising: a restoration assist information generation unit configured to generate, when it is detected that an abnormality has occurred in the equipment and an operation of the equipment has been stopped, restoration assist information, in which the work items for restoring the equipment are arranged in an order of execution according to the priority information, based on information of a location at which the abnormality has occurred and the information stored in the restoration work information storage unit; and a restoration assist information update unit configured to determine whether a work item that has already been executed needs to be executed again, to rearrange the work items in the order of execution according to the priority information set for the work items determined to be necessary to be executed, and to update the restoration assist information generated by the restoration assist information generation unit to restoration assist information including the work item that has already been executed and determined to need to be executed again and the work items that have not been executed, and excluding the work item that has already been executed and determined not to need to be executed again, when it is detected that a state of any location in the equipment has changed based on the state information acquired by the state information acquisition unit during a restoration work based on the restoration assist information. a restoration assist information generation unit configured to generate, when it is detected that an abnormality has occurred in the equipment and an operation of the equipment has been stopped, restoration assist information, in which the work items for restoring the equipment are arranged in an order of execution according to the priority information, based on information of a location at which the abnormality has occurred and the information stored in the restoration work information storage unit; and a restoration assist information update unit configured to determine whether a work item that has already been executed needs to be executed again, to rearrange the work items in the order of execution according to the priority information set for the work items determined to be necessary to be executed, and to update the restoration assist information generated by the restoration assist information generation unit to restoration assist information including the work item that has already been executed and determined to need to be executed again and the work items that have not been executed, and excluding the work item that has already been executed and determined not to need to be executed again, when it is detected that a state of any location in the equipment has changed based on the state information acquired by the state information acquisition unit during a restoration work based on the restoration assist information.