A method is provided for processing data in a mobile communication terminal including a first data memory for storing first data indicating user-stored information and a second data memory for storing second data indicating user-stored information. The method includes creating a first data list corresponding to the first data and a second data list corresponding to the second data and displaying items of the first data list and items of the second data list on a screen of the mobile communication terminal in response to a user's data movement request, selecting at least one item from one that is selected from the first data list and the second data list that are separately displayed based on user's selection information, and storing data of the selected item in the first data memory or the second data memory into the other memory if a predetermined key is input.