Abstract: During the process of managing and using geo-data in geological data management system, the directory tree can be classified according to data processing, geology, or data types; nevertheless, it is difficult to make modification after changing of consumer. In view of this disadvantage, the TreeView is adopted to control expression of directory tree in relational database tables. According to the table of contents directory tree records in the parent-child relationship, we could reach the synchronization processing between the presentation layer and the data layer, realize the method of free customize and modify directory tree structure by different consumer needs. This method has the flexible, convenient advantages, and it is easy to update applications as well as to use and manage geological data in practice.