Thispapermakesanoverallintroductionofecologicalresidence(ER),anewtypeofeco-buildingandstudiesitsorigin,definition,statusquoandcharacteristics.Firstly,itshapeslikeaforestseenfromafarandlikeagardenseeninside;secondly,itsenvironmentshouldbeuptothenaturallevel;thirdly,designing,management,greenenergyutilizationandsanitationshouldbeuptoenvironmentalstandard;fourthly,thegreenecologyconceptisnotonlyappliedtobuildingbutalsorootedintheresidents.Inthispaper,thefeaturesofecologicalresidencearesummarized-coziness,health,high-efficiencyandbeauty,andprinciplesofecologicalresidenceareproposed-ecology-based,human-oriented,local-conditions-basedandsystematic.Also,techniques,problemsandvariousunderstandingsarediscussedfortheenhancementofecologicalresidence.