A cursor movement control method performed by an image creation device comprising a cursor movement control unit which controls a movement of a cursor position (Xa, Xb) in a coordinate space of a display image work region within a memory of the image creation device, the display image work region including a plurality of regions (a, b) which are allocated into the display image work region, the plurality of regions (a, b) corresponds to a plurality of display regions (A, B) being displayed on one display screen of a display device by a picture-in-picture display function, wherein one region (a) and another region (b) of the plurality of regions (a, b) are arranged to be adjacent to each other, and an operating system of the image creation device recognizes that the one region (a) and the other region (b) of the plurality of regions (a, b) are arranged to be adjacent to each other, the cursor movement control method comprising: a reception step of receiving an instruction of activation of the picture-in-picture display function for a simultaneous display of one display region and another display region on the one display screen or of inactivation of the picture-in-picture display function for a non-simultaneous display of one display region and another display region on the one display screen; and a control step of controlling the movement of the cursor position (Xa, Xb) in the display image work region within the image creation device, wherein the movement of the cursor position (Xa, Xb) is controlled between the one region (a, b) corresponding to the one display region (A, B) and the other region (a, b) corresponding to the other display region (A, B) according to the instruction received in the reception step, wherein in the control step, the cursor position (Xa) on the one region (a) is moved onto the other region (b) when the instruction for the display is received in the reception step, such that a cursor (20, 22, 23) displayed on the display screen appears in a position on the other display region which is superposedly displayed on the one display region, and wherein in the control step, while the one display region and the other display region are simultaneously displayed on the display screen, the cursor position (Xb) on the other region (b) is moved onto the one region (a) when the instruction for the non-simultaneous display is received in the reception step, such that the cursor (21, 22, 23) displayed on the display screen appears in a position on the one display region without disappearing from the display screen. a reception step of receiving an instruction of activation of the picture-in-picture display function for a simultaneous display of one display region and another display region on the one display screen or of inactivation of the picture-in-picture display function for a non-simultaneous display of one display region and another display region on the one display screen; and a control step of controlling the movement of the cursor position (Xa, Xb) in the display image work region within the image creation device, wherein the movement of the cursor position (Xa, Xb) is controlled between the one region (a, b) corresponding to the one display region (A, B) and the other region (a, b) corresponding to the other display region (A, B) according to the instruction received in the reception step, wherein in the control step, the cursor position (Xa) on the one region (a) is moved onto the other region (b) when the instruction for the display is received in the reception step, such that a cursor (20, 22, 23) displayed on the display screen appears in a position on the other display region which is superposedly displayed on the one display region, and wherein in the control step, while the one display region and the other display region are simultaneously displayed on the display screen, the cursor position (Xb) on the other region (b) is moved onto the one region (a) when the instruction for the non-simultaneous display is received in the reception step, such that the cursor (21, 22, 23) displayed on the display screen appears in a position on the one display region without disappearing from the display screen.