Construct E-learning knowledge ontology based on tree structure with XML

People communicate information, share knowledge and exchange culture through the Internet. However, network resources in different ways lead to duplication of resources. What´s more, resources can´t be effective integration, transmission and application. So we present a new E-learning knowledge ontology construction method based on tree structure in this paper. Tree structure makes knowledge representation unified and standardized. It is easy to realize and has stable performance. In view of the advantage of XML, we use it to build ontology, give the framework of the specific domain knowledge and the specific process of ontology construction. At the end, we attach the program code.