Dynamical ui framework and method for appling user interface based on the same

A dynamical UI(User Interface) framework and a UI implementing method based on the same are provided to enable a user to download/select a UI of a mobile terminal dynamically by using the dynamic UI framework supporting network connection. A UI manager(131) downloads UI objects(101) including UI information through the mobile network, and determines a UI engine(132) for processing the UI object by analyzing feature of the UI object when a user selects the UI object. The UI engines enable an output device of a mobile terminal to output the UI object by analyzing the selected UI object. The UI object defines a screen display mode, a sound output mode, or a vibration output mode according to user input, is formed by using one of XML(eXtensible Markup Language), text, a binary code and a library, and includes metadata. The UI manager makes the user select one of the installed UI objects and transfers the selected UI object to the UI engine corresponding to the selected UI object.