With the intensive and large scale application of IETM in equipment integrated support, information retrieval technology becomes one of the most key technologies. This article discusses the full-text search technology and Lucene full-text retrieval engine, and combines them to develop a highperformance scalable IETM full-text retrieval system, this system can effectively deal with IETM unstructured data and structured data, significantly improving search efficiency and it is convenient to extend and easy to maintain. First, it briefly introduces information retrieval theory, and discusses the information retrieval requirement in IETM. Then, it thoroughly surveys the Lucene full-text retrieval engine, including its framework, retrieval process and index mechanism. Next this paper designs Lucene based IETM information retrieval process. Finally, the realization of Lucene based IETM information