To　realize　the　goal　of　integrating　remote　heterogeneous　databases,　the　authors　introduce　the　Web　Services　as　well　as　its　characteristics　and　provides　a　new　Web　Services　based　way　to　integrate　the　remote　heterogeneous　databases.　By　using　Web　Services　such　a　brand　new　distributed　computing　technology,　remote　heterogeneous　data　sources　can　be　connected　together　to　form　a　virtual　database,　which　can　supplies　a　uniform　transparent　interface　to　visit.