Effort during screen transition editing is reduced. An editing device for editing transitions each between a plurality of display screens, comprising: a transition display unit which displays a transition diagram window for entering the transition; a screen layout unit which places screen nodes representing specified display screens in the transition diagram window; a transition layout unit which places a specified transition from a display screen before the transition to a display screen after the transition into the transition diagram window as a link from the screen node representing the display screen before the transition to the screen node representing the display screen after the transition; a transition condition input unit which allows a user to enter a transition condition for performing the transition represented by the link; a transition condition storage unit which stores the transition condition for performing the transition represented by the link, associating the transition condition with the link; and a generation unit which generates a transition rule for performing the transition between the plurality of display screens displayed by a display device on the basis of the link and the transition condition stored in the transition condition storage unit.