An information display device (30, 50, 70) comprising: an image capturing unit configured to capture an image; a display unit configured to display the image captured by the image capturing unit; a detection unit (33, 34) configured to detect a position and an attitude of the information display device; an identification unit configured to identify a field device (10, 10a, 10b) positioned in a direction of image capturing by the image capturing unit, by using a detection result of the detection unit; a display control unit configured to cause an overlaid display on the display unit of the image captured by the image capturing unit, overlaid with at least one of static information and dynamic information regarding the field device identified by the identification unit regardless of whether an image of the field device is included in the image captured by the image capturing unit; an image processing unit configured to identify a display position, within the image captured by the image capturing unit, of the image of the field device that is included in the image captured by the image capturing unit; and a display position adjustment unit configured to adjust the display position, within the image captured by the image capturing unit, of the at least one of the static information and the dynamic information that is displayed by the display control unit in accordance with the display position identified by the image processing unit, wherein when it is determined that the display position of the image of the field device could not be identified by the image processing unit, the at least one of the static information and the dynamic information of the field device is displayed at a display position within the image captured by the image capturing unit that corresponds to a position of the field device identified by the identification unit; and when it is determined that the display position of the image of the field device could be identified by the image processing unit, the display position adjustment unit adjusts the display position in the image of the at least one of the static information and the dynamic position of the field device. an image capturing unit configured to capture an image; a display unit configured to display the image captured by the image capturing unit; a detection unit (33, 34) configured to detect a position and an attitude of the information display device; an identification unit configured to identify a field device (10, 10a, 10b) positioned in a direction of image capturing by the image capturing unit, by using a detection result of the detection unit; a display control unit configured to cause an overlaid display on the display unit of the image captured by the image capturing unit, overlaid with at least one of static information and dynamic information regarding the field device identified by the identification unit regardless of whether an image of the field device is included in the image captured by the image capturing unit; an image processing unit configured to identify a display position, within the image captured by the image capturing unit, of the image of the field device that is included in the image captured by the image capturing unit; and a display position adjustment unit configured to adjust the display position, within the image captured by the image capturing unit, of the at least one of the static information and the dynamic information that is displayed by the display control unit in accordance with the display position identified by the image processing unit, wherein when it is determined that the display position of the image of the field device could not be identified by the image processing unit, the at least one of the static information and the dynamic information of the field device is displayed at a display position within the image captured by the image capturing unit that corresponds to a position of the field device identified by the identification unit; and when it is determined that the display position of the image of the field device could be identified by the image processing unit, the display position adjustment unit adjusts the display position in the image of the at least one of the static information and the dynamic position of the field device.