6CITYPLANNINGANDDESIGNABSTRACT/Rosein1960s,theModernEnvironmentalismMovementhadagreatinfluenceonthewesternhumanesocialscienceinthelate20thcentury,whilethe“environmentalethics”or“environmentalphilosophy:arisingattherightmoment.Againstthebackgroundofenvironmentalcrisisandvariousproblemsduringurbandevelopment,sustainabledevelopmentbecomescommonunderstanding.Aroundthemainresidentialenvironmentofmankind--city,thispapersetsupfouraspects,whichareworththinking:conceptionofecologicalcity;con-tinuityofurbancontext;responsibilityofarchitectandparticipationofwholesociety.KEYWORDS/outlookonenvironmentalethics,sustainabledevelopment,historicconservation,architectureofwholesociety78CITYPLANNINGANDDESIGN