With　the　booming　development　of　urban　subway　construction,　the　underground　complex　combines　with　transport　hub　has　entered　the　high-speed　development　period.　Hub　atrium　of　underground　complex　integrates　traffic　space　with　public　space　and　commercial　space　together,　which　features　unique　advantages　such　as　more　exciting　experience,　more　effective　connection,　and　more　attractive　for　traveling　and　shopping　people.　It　should　have　great　potentialibyr.　This　paper　first　discusses　the　advantage　and　characteristic　of　limb　atrium　site　in　land　use,　function　efficiency,　space　quality,　Secondly,　the　paper　analyzes　the　difficulties　of　evacuation　design　to　this　kind　of　space　because　the　function　is　highly　integrated　and　attribute　multiple　compound　brought　about　by　it.　And　this　as　the　goal,　puts　forward　relevant　space　design　countermeasures　from　the　overall　layout,　traffic　and　wayfinding　space.　Hope　to　provide　the　beneficial　reference　for　our　current　subway　construction　and　the　development　of　urban　underground　space.