A drive assisting display device (1) provided with a rear wide-angle camera (11), an ECU (20) for displaying a rear image captured by means of the rear wide-angle camera (11), and a display (30), wherein the display control unit (25) of the ECU and the display (30) are capable of displaying a moving object approach detection frame (210) and a pedestrian detection frame (212) for assisting a driver to drive the vehicle (100) to which the device is mounted while displaying the rear image by dividing same onto multiple screens, and change the number of screens displayed depending on when the moving object approach detection frame (210) is displayed and when the moving object approach detection frame (210) is not displayed. As a consequence, it is easier for the driver to determine when the system for displaying the moving object approach detection frame (210) is operating and when said system is not operating.