Abstract: A distributed inverted index's building method based on DHT (Distributed Hash Table) was adopted to improve the index's creating and updating efficiency.The arithmetic, using the DHT technology based on improved Chord network,hashes the terms and their relational information to the distributed index servers and builds the index parallely. This method reduces the index's building time through distributing a task to many nodes. The strategies of scheduling the index building task through chained index management servers and the incremental distributed inverted index updating method were used,which could assure index's consistency and updating efficiency.

Key words: Distributed index, Distributed hash table, Chord network