With　100%　recycled　coarse　aggregates　replacement,　and　recycled　fine　aggregates　and　glazed　hollow　bead　volume　replacement　rate　as　main　variables,　the　thermal　conductivity　of　self-thermal　insulation　&　recycled　concrete　is　studied.　The　recycled　fine　aggregates　substituted　rate　is　0%,　50%,　100%,　respectively,　and　the　glazed　hollow　bead　volume　replacement　rate　is　60%~120%.　The　multiple　factors　effect　of　thermal　insulation　&　recycled　concrete　are　revealed,　and　the　optimized　concrete　mix　with　excellent　general　performance　is　gained.　Then　the　thermal　performance　of　self-thermal　insulation　&　recycled　concrete　hollow　block　masonry　is　studied.　Combined　with　theory　calculation　and　numerical　simulation　analysis,　the　thermal　performance　of　self-thermal　insulation　&　recycled　concrete　hollow　block　masonry　and　formal　concrete　hollow　block　masonry　are　compared　and　analyzed.　The　results　show　that:　The　thermal　resistance　of　self-thermal　insulation　&　recycled　concrete　hollow　block　masonry　increases　41.9%　than　that　of　formal　concrete　hollow　block　masonry;　under　the　condition　of　230C　temperature　difference　of　indoor　and　outside,　the　formal　concrete　hollow　block　masonry　temperature　rise　are　44.9%　higher　than　the　self-thermal　insulation　&　recycled　concrete　hollow　block　masonry　after　1　hour;　the　self-thermal　insulation　&　recycled　concrete　hollow　block　masonry　is　qualified　for　65%　energy-saving　with　20mm　insulation　mortar　external　rendering　and　20mm　insulation　mortar　internal　rendering.　©,　2015,　Tsinghua　University.　All　right　reserved.