A system for supporting operation of a user in a facility, comprising: an information processing apparatus, and a user terminal having a display device and an imaging device, and capable of identifying from which direction and angle the user is seeing the facility; the information processing apparatus, comprising: a display control unit; a creation unit; a control information input unit; a first image input unit configured to input a first image of a facility in a steel plant which is imaged in the imaging device of the user terminal to the display control unit; a measurement information input unit configured to input measurement information measured by a temperature sensor, an air pressure sensor or a pressure sensor provided in the facility to the creation unit; wherein the control information input unit is configured to input to the creation unit control information transmitted to the facility from a control device configured to control the facility, the control information instructing blowing of oxygen or gas into the facility, or charging of material into the facility; wherein the creation unit is configured to create a second, virtual image representing a status outside or inside of the facility based on the control information and the measurement information, wherein the display control unit is configured to overlay and display the second, virtual image created in the creation unit and the first image inputted by the first image input unit on the display device of the user terminal, based on the direction and angle identified by the user terminal. an information processing apparatus, and a user terminal having a display device and an imaging device, and capable of identifying from which direction and angle the user is seeing the facility; the information processing apparatus, comprising: a display control unit; a creation unit; a control information input unit; a first image input unit configured to input a first image of a facility in a steel plant which is imaged in the imaging device of the user terminal to the display control unit; a measurement information input unit configured to input measurement information measured by a temperature sensor, an air pressure sensor or a pressure sensor provided in the facility to the creation unit; wherein the control information input unit is configured to input to the creation unit control information transmitted to the facility from a control device configured to control the facility, the control information instructing blowing of oxygen or gas into the facility, or charging of material into the facility; wherein the creation unit is configured to create a second, virtual image representing a status outside or inside of the facility based on the control information and the measurement information, wherein the display control unit is configured to overlay and display the second, virtual image created in the creation unit and the first image inputted by the first image input unit on the display device of the user terminal, based on the direction and angle identified by the user terminal. a display control unit; a creation unit; a control information input unit; a first image input unit configured to input a first image of a facility in a steel plant which is imaged in the imaging device of the user terminal to the display control unit; a measurement information input unit configured to input measurement information measured by a temperature sensor, an air pressure sensor or a pressure sensor provided in the facility to the creation unit; wherein the control information input unit is configured to input to the creation unit control information transmitted to the facility from a control device configured to control the facility, the control information instructing blowing of oxygen or gas into the facility, or charging of material into the facility; wherein the creation unit is configured to create a second, virtual image representing a status outside or inside of the facility based on the control information and the measurement information, wherein the display control unit is configured to overlay and display the second, virtual image created in the creation unit and the first image inputted by the first image input unit on the display device of the user terminal, based on the direction and angle identified by the user terminal.