Based　on　the　network　environment　of　the　client/server　is　a　kind　of　typical　business　mode,　according　to　certain　request,　the　application　to　the　existing　business　work　mode,　based　on　the　collection　and　processing　business　critical　data,　this　paper　puts　forward　a　method　for　such　application　of　LAN　monitoring　system,　and　has　been　used　in　the　structure　of　fiscal　system　based　on　network　environment.　©　2010　IEEE.