A method of representing a tree database in a display menu. First, a tree database with a database name is provided. The provided tree database possess first level data nodes. The first level data nodes have a null set or second level data nodes. The first and the second data node have data node names. Next, one of the first level data nodes is selected as a working data node. The node name thereof is then titled the working menu. The second level data nodes possessed by the working data node are listed in the working menu. The non-selected first level data nodes are listed as a switching menu. Finally, the working menu, the switching menu, and the database name are combined into a display menu.