Abstract: A method and an apparatus for designing user interface are disclosed. The method is processed by a user interface processing program installed in an electronic device and comprises following steps. First, at least one key is provided. Then, a menu is provided, wherein the menu is a tree structure having a root node and a plurality of connected nodes, at least one sub-node family can be derived from each node, wherein for each node it is defined one of a property, at least one key to receive, a picture to display, and an action to execute, or the combination thereof. Afterwards, a display for displaying the picture of the node is provided, wherein key is suitable for moving the node to an adjacent node.