This screen creation assistance device (7) is a device for assisting in creating a monitoring screen that displays information about conditions of a controlled device when a control device controls the controlled device in accordance with a control program. This screen creation assistance device (7) comprises: a program determination unit (19) which determines whether or not each label included in a control program for controlling a controlled device is assigned to a condition display field that is included in a monitoring screen and that is designed to display information about a condition of the controlled device, wherein each label constitutes a variable name used in the control program; and a discriminative display control unit (20) which, if the program determination unit (19) determines that a label included in the control program is assigned to a condition display field, causes a screen editing screen to display the condition display field in a different manner than would be the case if a label included in the control program were not assigned to the condition display field.