Abstract: In this paper, a hierarchical analysis approach in text structure analysis is put forward. The main idea is shown as follows: Firstly, the physical structure of text is obtained from the input text; Secondly, based on concept mapping, concept density, and concept disambiguation, text hierarchical analysis is automatically performed; Finally, as a result, the logical structure of text is gained, and text structure tree is created which consists of text theme, hierarchies, and paragraphs. The approach enables the hierarchies to keep paragraphs in a natural order,and it can be applied to the broad fields.