To implement sharing resources in different component libraries can improve the retrieval efficiency. Classification is the basis of retrieval. This paper sets up a number of component libraries based on keywords and ontology classification and introduces the transformation of retrieval conditions in order to help users to retrieve components from the component libraries based on the two classification models. It can avoid users’ proposition of different retrieval conditions for the same demand repeatedly. It can also decrease the cost of understanding in retrieval and improve the recall for keyword retrieve ontology component library. The validity and feasibility of the method is vertified by the experiment.