The　number　of　study　about　TQC　theory　in　the　project　planning　and　construction　period　is　more　than　project　operation　period.　Taking　the　water　supply　project　as　an　example,　in　the　operation　period　of　the　project　management　mainly　relates　to　the　technical　management　and　system　management,　and　take　advantage　of　facilities　management　theory,　discussed　water　supply　project　in　how　to　apply　the　theory　of　project　management.　In　order　to　improve　China＇s　management　level　in　water　supply　engineering.　©　(2014)　Trans　Tech　Publications,　Switzerland.