Cities　comprise　many　residential　districts,　facing　environment　and　energy　problems.　Therefore,　the　retrofit　of　these　existing　residential　districts　is　the　main　part　of　city　renewal.　Some　retrofit　strategies　may　affect　the　thermal　microclimate　environment　and　lead　to　changes　in　the　energy　demand　of　buildings.　Few　studies　had　evaluated　these　retrofit　effects,　which　has　brought　the　motivation　for　this　study,　to　determine　the　microclimate　changes　surrounding　buildings　due　to　residential　district　retrofits　and　the　corresponding　impact　on　the　cooling　load　of　buildings.　The　most　general　retrofit　strategies　were　selected,　including　greening　rate,　ground　pavement　materials,　wall　materials　and　roof　materials.　They　were　applied　to　a　prediction　model　for　the　selected　residential　district　in　the　simulation　tool.　The　mean　reduction　of　air　temperature　around　the　building　has　been　used　to　evaluate　the　impact　of　retrofit　strategies　on　the　microclimate　in　the　district.　The　results　showed　that　greening　had　the　greatest　impact　on　the　mean　air　temperature　around　buildings,　followed　by　the　pavement　material,　the　roof　and　the　wall　material.　Ground　greening,　wall　material　and　roof　material　decreased　the　total　cooling　load,　while　pavement　material　increased　it.