In　actual　operation　the　centralized　solar　hot　water　system　whether　can　more　energy　saving,　influenced　by　the　collector　area　design,　system　operation　and　control　mode,　installation　accuracy　and　various　factors　so　on.　The　analysis　in　this　paper　is　mainly　based　on　the　measured　data　of　the　collector　area　key　design　parameters　such　as　average　daily　water　use,　water　temperature,　the　thermal　collection　efficiency,　water　tank　and　pipeline　heat　loss　and　other　parameters,　as　well　as　the　problem　found　in　the　test　of　the　construction　and　operation　control,　put　forward　reasonable　suggestions　for　energy　saving　potential,　provide　reference　for　the　centralized　solar　hot　water　system　design　and　operation　in　future.　©　(2013)　Trans　Tech　Publications,　Switzerland.