This　study　presents　a　comprehensive　approach　to　renovating　and　optimizing　balconies　in　old　residential　buildings　in　Beijing.　Firstly,　it　explores　residential　balconies＇　evolution,　characteristics,　and　development　trends　to　identify　various　sample　types　and　understand　the　associated　problems　and　residents＇　needs　related　to　balconies　through　investigation.　Secondly,　the　Rhino/Grasshopper　parametric　platform　is　employed　to　simulate　the　performance　and　analyze　data　from　standard　balcony　types,　resulting　in　five　qualitative　and　four　quantitative　renovation　strategies　and　methods.　Subsequently,　these　comprehensive　renovation　and　optimization　design　strategies　are　implemented　in　the　renovation　process,　and　their　performance　is　simulated.　The　daylight　autonomy　(DA),　universal　daylight　indicator　(UDI),　and　spatial　daylight　autonomy　(sDA)　metrics　experienced　significant　increases　of　16.56,　20.12,　and　0.13,　respectively,　indicating　improved　light　environment　and　functionality.　Notably,　the　proposed　strategies　maintain　consistent　energy　consumption　and　thermal　comfort　levels.　Both　PMV　and　PPD　have　improved,　but　the　improvement　is　not　significant,　only　by　0.01.　The　window-to-wall　ratio　has　been　increased　by　0.1,　and　insulation　has　been　added.　The　overall　thermal　comfort　value　is　stable.　These　findings　validate　the　practicality　and　effectiveness　of　the　proposed　approach　and　methods.　This　study　provides　valuable　references　for　renovating　and　optimizing　balconies　in　old　residential　buildings,　contributing　to　problem-solving　efforts　and　enhancing　living　quality.