An image display device comprising: a vehicle speed sensor that detects a speed of a vehicle, a steering angle sensor that detects a steering angle of the vehicle, an image acquisition unit that acquires a peripheral image of the vehicle; and an image display unit that displays the peripheral image acquired by the image acquisition unit, wherein the image display unit displays the peripheral image on a left side screen, a middle screen, and a right side screen by dividing the peripheral image, detects a pedestrian reflected in the peripheral image by a pattern matching by checking matching between the peripheral image and a predetermined pattern for the peripheral image of the middle screen, detects another vehicle reflected in the peripheral image using an optical flow by analyzing direction and speed of a point in the peripheral image moving with passage of time for the peripheral image of each of the left and right side screens, wherein the image display unit further displays a pedestrian detection frame surrounding the pedestrian as a driving assistance display showing presence of the pedestrian when the pedestrian reflected in the peripheral image of the middle screen is detected, and displays a moving object approach detection frame surrounding a part of either the left side screen or the right side screen on the side where another vehicle approaches where the another vehicle has been detected, as the driving assistance display when the another vehicle reflected in the peripheral image of either the left side screen or the right side screen is detected, the image display unit does not display the moving object approach detection frame when either the speed or the steering angle of the host vehicle is equal to or larger than a predetermined threshold value, wherein the peripheral image is a rear image captured by a wide-angle rear camera and the image display unit displays the rear image on the left and right rear side screens and on the middle rear screen by dividing the rear image and wherein the image display device has a display control unit which performs distortion correction to correct the distortion of the images displayed on the left and right rear side screens, characterized in that the left and right rear side screens perform display in a trapezoidal shape, the widths of the top and bottom sides of the left and right rear side screens are reduced on the left side of the left rear side screen and the right side of the right rear side screen, and wherein there is a predetermined gap between each of the left and right rear side screens and the middle rear screen. a vehicle speed sensor that detects a speed of a vehicle, a steering angle sensor that detects a steering angle of the vehicle, an image acquisition unit that acquires a peripheral image of the vehicle; and an image display unit that displays the peripheral image acquired by the image acquisition unit, wherein the image display unit displays the peripheral image on a left side screen, a middle screen, and a right side screen by dividing the peripheral image, detects a pedestrian reflected in the peripheral image by a pattern matching by checking matching between the peripheral image and a predetermined pattern for the peripheral image of the middle screen, detects another vehicle reflected in the peripheral image using an optical flow by analyzing direction and speed of a point in the peripheral image moving with passage of time for the peripheral image of each of the left and right side screens, wherein the image display unit further displays a pedestrian detection frame surrounding the pedestrian as a driving assistance display showing presence of the pedestrian when the pedestrian reflected in the peripheral image of the middle screen is detected, and displays a moving object approach detection frame surrounding a part of either the left side screen or the right side screen on the side where another vehicle approaches where the another vehicle has been detected, as the driving assistance display when the another vehicle reflected in the peripheral image of either the left side screen or the right side screen is detected, the image display unit does not display the moving object approach detection frame when either the speed or the steering angle of the host vehicle is equal to or larger than a predetermined threshold value, wherein the peripheral image is a rear image captured by a wide-angle rear camera and the image display unit displays the rear image on the left and right rear side screens and on the middle rear screen by dividing the rear image and wherein the image display device has a display control unit which performs distortion correction to correct the distortion of the images displayed on the left and right rear side screens, characterized in that the left and right rear side screens perform display in a trapezoidal shape, the widths of the top and bottom sides of the left and right rear side screens are reduced on the left side of the left rear side screen and the right side of the right rear side screen, and wherein there is a predetermined gap between each of the left and right rear side screens and the middle rear screen.