In　the　northern　China　with　cold　climate,　the　deep　borehole　heat　exchanger　(DBHE)　is　widely　developed　in　recent　years,　which　is　coupled　with　ground　source　heat　pump　system　(GSHP)　to　supply　geothermal　energy　for　building　heating.　In　this　study,　a　new-type　DBHE　coupled　GSHP　system　model　was　developed　by　combining　the　MATLAB　and　TRNSYS　software.　Considering　the　upper　threshold　of　inlet　temperature　for　the　heat　pump　unit,　the　control　logic　between　the　plate　heat　exchanger　(PHE)　and　the　heat　pump　unit　was　designed.　Taking　space　heating　of　a　residential　building　as　a　scenario,　the　operating　characteristic　and　energy　performance　of　system　were　analyzed.　The　results　show　that　the　PHE　operation　time　during　a　heating　period　gradually　decreases　from　651h　to　212h　over　10　years.　The　sudden　decrease　of　PHE　operation　time　will　lead　to　the　increase　of　seasonal　performance　factor　of　heat　pump.　Furthermore,　the　circulation　temperature　attenuation　of　DBHE　decreases　exponentially　with　the　increase　of　heat　extraction　capacity.　Moreover,　the　effects　of　dynamic　and　constant　building　heating　load　on　the　system　operation　and　energy　distribution　relationship　were　explored.　Compared　with　dynamic　heating　load,　heat　extraction　capacity　of　PHE　and　heat　pump　under　constant　load　is　underestimated　and　overestimated　during　heating　period,　respectively.　After　10　years　of　operation,　the　difference　of　heat　extraction　capacity　of　system　reaches　to　5.37　MWh.　The　results　suggest　that　system　performance　prediction　based　on　constant　heat　load　has　deviation　from　the　real　situation.　©　2022　IEEE.