An image scanning device is provided with a transparent plate, a contact image sensor, a scanning device casing, a cover member, and a display device. An image medium having an image to be scanned is placed on the transparent plate. The contact image sensor is disposed below the transparent plate, and scans the image of the image medium placed on the transparent plate. The scanning device casing houses the transparent plate and the contact image sensor. The cover member covers a top face of the transparent plate. The display device is capable of moving between a lying position and a standing position. In a state where the display device is positioned anywhere between the lying position and the standing position, a top end of the display device is lower than a top end of the cover member, and a bottom end of the display device is higher than a bottom end of the scanning device casing.