Materialized　view　technology　is　widely　used　in　XML　databases.　With　the　increasing　of　the　number　of　views　in　database,　it　is　inevitably　to　encounter　the　storage　problem.　In　an　attempt　to　solve　this　problem,　this　paper　proposes　a　lazy　materialized　view　concept　and　implements　a　lazy　materialized　view　based　on　B/S　model.　This　lazy　materialized　view　can　effectively　reduce　the　storage　space　required　for　materialized　views,　thereby　it　can　significantly　improve　the　response　time　of　XML　database　system　in　certain　circumstances.　©　2011　IEEE.