The　load　unbalance　problem　of　cold　and　heat　is　a　universal　issue　in　Ground　Source　Heat　Pump　(GSHP)　system.　If　the　problem　cannot　be　solved　very　well,　the　underground　soil　temperature　will　be　gradually　rise　or　decrease　inevitably　year　by　year,　which　will　eventually　cause　the　GSHP　system　cannot　work　normally.　Therefore,　in　this　paper,　the　operation　data　of　the　GSHP　system　in　recent　three　years　are　collected　and　analyzed　in　high-rise　residential　building　in　Jiangsu　area,　and　the　results　show:　In　residential　building　of　high　temperature　and　humidity　area,　cooling　load　in　summer　is　greater　than　heating　load　in　winter　which　lead　to　obvious　thermal　accumulation,　with　a　55.6%　unbalance　rate　of　cold　and　heat　between　summer　and　winter.　The　soil　temperature　has　an　obviously　rise　about　1.5(omicron)C　similar　to　2(omicron)C　in　past　three　years＇　time.　The　outlet　water　temperature　on　underground　side　can　be　up　to　38(omicron)C,　causing　the　operation　of　the　heat　pump　unit　deviation　from　design　condition,　low　efficiency　and　the　lower　cooling　load　compared　with　rated　value.