Nowadays, knowledge portals make an important contribution to enabling organizational knowledge management by providing users interactive and personalized interface which facilitates efficient access to various types of information. However, navigation through mass of information represented on the web is not expedient and effective, as well as the development and maintenance. The emerging ontology-based approach serves as a semantic backbone for knowledge constructing, accessing and representing can be used to filling up these short coming. In this paper we attempt to build knowledge portal for software testing service by using ontology-based technique and web page development technology. Further more, we want to summarize a set of approaches of ontology-based knowledge portal development which can be used for different areas.