In　order　to　solve　the　problem　of　the　soil　heat　imbalance　due　to　the　year-round　operation　of　the　solar-ground　source　heat　pump　in　regions　with　the　large　gap　between　cooling　and　heating　loads,　this　paper　proposes　to　collect　and　store　solar　energy　in　the　soil　in　the　transition　season.　Based　on　the　heating　and　cooling　design　of　a　solar-ground　source　double　effect　LiBr-H2O　absorption　heat　pump　for　an　office　building,　the　heat　pump　system　considering　the　solar　energy　stored　in　the　soil　has　been　built　on　TRNSYS　platform.　The　long-term　operating　simulation　has　been　conducted.　The　soil-based　energy　storage　effect　has　been　evaluated　with　taking　the　soil　heat　balance　as　the　objective.　The　necessity　of　using　the　soil-based　energy　storage　in　the　transition　season　has　been　discussed　based　on　dynamic　performance　analysis　results.　The　results　show　that　the　average　soil　temperature　in　the　single　heating　condition　rises　to　16.49　degrees　C,　which　is　stable　around　15　degrees　C　in　the　double　cooling　and　heating　condition　after　10-years　operation.　The　soil　heat　imbalance　rates　under　two　conditions　are　18.32%　and　11.64%,　respectively.　It　can　be　seen　that　soil　heat　imbalance　can　be　solved　by　the　soil-based　energy　storage　in　the　transition　season.