A　prestressed　continuous　rigid　frame　bridge　with　145　m　+　2　×　260　m　+　145　m　spans,　the　Xiabaishi　Bridge,　is　selected　as　the　sample　of　the　required　engineering　background.　Aspects　of　its　health　monitoring　system　are　described,　including　the　overall　monitoring　objective,　measurement　contents,　monitoring　instrument　selection,　monitoring　points　layout,　data　acquisition　and　long-distance　transmission　and　safety　alarming　system　and　so　on.　Static　and　dynamic　data　acquisition　is　realized,　namely,　vibration　characters　such　as　acceleration　and　dynamic　displacement　and　static　information　such　as　strain,　temperature,　displacement　of　supports　and　bridge　line-type　are　syncretized　and　controlled.　The　star　transmission　structures　syncretized　in　the　monitoring　system　can　make　sure　that　each　acquisition　substation　is　independent　and　has　strong　anti-interference　capability.　The　multi-molds　optical　fiber　net　and　telephone　net　are　used　to　carry　out　unattended　long-distance　transmission　and　long-distance　supervisory　control.　The　on-line　monitoring　system　of　the　Xiabaishi　Bridge　has　worked　very　well　since　it　was　opened.　It　demonstrates　normal　operation　and　stable　performance　and　provides　accurate　and　reliable　monitoring　data.　The　initial　analysis　indicates　that　no　abnormality　occur　with　the　Xiabaishi　Bridge,　and　the　Bridge　is　safe　at　present.