(EN) An industrial plant monitoring device according to one embodiment of the present invention is provided with a storage unit and a registration unit. The storage unit has an alarm database in which alarm information that is identification information for specifying an alarm, first determination information that indicates the content of a determination made by an operator with respect to alarm information inputted to an own industrial plant monitoring device, and second determination information that indicates the content of a determination made by another operator with respect to alarm information inputted to another industrial plant monitoring device are stored in association with each other. In the case when the first determination information with respect to the alarm information is inputted, the registration unit registers, in the alarm database, the first determination information in association with the alarm information, and in the case when the second determination information with respect to the alarm information is received, the registration unit registers, in the alarm database, the second determination information in association with the alarm information.Fig 2.