This　research　carries　on　the　numerical　analysis　to　the　residential　energy　consumption　and　cost　during　life　cycle,　based　on　the　occupants＇　life　style　and　family　structure　change.　The　results　show　that　along　with　the　regional　difference,　the　saving　effect　on　LCE　and　LCC　of　every　energy　conservation　technology　is　different.　Especially　in　the　hot　summer　and　cold　winter　regions,　optimal　energy　conservation　and　efficiency　can　be　obtained　while　the　housing　is　well-insulated　and　airtight　building　envelope　coupled　with　solar　energy.