Deep Web information is heterogeneous and dynamic. How to make use of this information effectively is a challenging task. To handle this problem, an effective solution is knowledge visualization to management knowledge of Deep Web. So, we introduce the Semantic Web technology into the knowledge visualization process. And, we visualize the process of knowledge management in order to share the knowledge, reuse the knowledge and creative the knowledge. Finally, several ontology visualization examples are shown as the visualized process and knowledge management approach, and make a good effect.