In view of the problems such as indexing slow,renewing no in time,searching inefficient in search engine of a unit’s Website,and based on analyzing and researching the merits of Lucene and XML technology on constructing search engine,this paper proposes an XML-based full text retrieval prototype system.The system uses XML as a universal data interface,uses Lucene as the development platform,thus achieves the purpose of rapidly timely indexing and improving retrieval efficiency.