Researches　on　individual　thermal　adaptation　to　free-running　environment　in　apartments　in　Beijing　were　carried　out　for　54　occupants,　respectively.　The　individual　adaptation　characteristics　were　compared　among　the　54　occupants　from　the　two　aspects:　adaptation　level　to　indoor　temperature　and　humidity　ratio　and　the　degrees　of　interaction　between　indoor　temperature　and　humidity　ratio.　Then,　the　differences　and　similarities　of　individual　thermal　adaptation　for　all　the　54　occupants　were　summarized.　Furthermore,　cluster　analysis　was　employed　to　understand　group　status　of　thermal　adaptation　to　free　running　environment　of　apartments　in　Beijing.　Some　typical　thermal　adaptation　patterns　were　identified　and　future　work　was　discussed.　Finally,　the　relationship　between　thermal　adaptation　levels　and　occupants＇　physiological　and　psychological　features　was　discussed　in　detail.　©　2016,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.