A method of managing content using an image display device includes reproducing and displaying first content in a first region of a screen of the image display device, displaying a first image representing a first mobile terminal connected to and communicating with the image display device and a second image representing second content stored in the first mobile terminal in a second region of the screen, receiving a first user command for selecting the second image, displaying a third image representing a device which will reproduce, store or receive the second content in a third region of the screen, receiving a second user command for selecting the device which will reproduce, store or receive the second content, and enabling the selected device to reproduce, store or receive the second content according to the second command.