The paper begins with the ontology construction requirements based on ontology reuse and transformation of existing resources, combines the current situations of study on technical progress and tools for ontology construction at home and abroad, and conducts code development of tools for ontology construction and function realization based on WebProtege class library. In the process of realization, pay attention to the interactive mode of combination of automatic tool processing and manual review, and collect specific sample data to verify the feasibility and usability of applying the developed tools for ontology construction.