The　centralized　data　mining　system　and　the　distributed　data　mining　system　are　discussed　respectively　based　on　the　development　situation　of　data　mining　system　at　present.　We　illustrate　the　components＇　implementation　techniques　of　the　centralized　data　mining　system　in　detail,　and　we　also　make　a　conclusion　about　the　development　of　the　centralized　and　the　distributed　data　mining　system.　Research　direction　and　development　trend　of　data　mining　system　is　discussed.　Finally　the　future　of　data　mining　system　is　foreseen.