A kind of sealed chamber for having movable threshold of system of the present invention,It includes a sealed chamber ontology,One threshold,Two grip modules and a door-plate； Sealed chamber ontology is formed with an inner space and an entrance,The bottom side of entrance is flushed with the bottom side of the inner space； Threshold separably sets the bottom side of what entrance； Two grip modules push and fix the both ends of threshold； Door-plate and threshold close entrance jointly,Inner space is set to keep airtight； Thereby,When trolley needs to carry historical relic disengaging sealed chamber,Threshold can be separated with sealed chamber ontology rapidly,Make on the ground position what same plane inside and outside sealed chamber,Make trolley that can smoothly pass in and out sealed chamber； And when needing airtight,Threshold can return rapidly dress,And threshold is pushed by grip module,With close sealed chamber ontology,Threshold,Gap between door leaf.本發明係一種具活動式門檻的氣密室，其包含一氣密室本體、一門檻、兩夾鉗組件及一門板；氣密室本體形成有一內部空間及一出入口，出入口之底側面與該內部空間之底側面齊平；門檻可分離地設於出入口之底側面；兩夾鉗組件下壓並固定門檻的兩端；門板與門檻共同封閉出入口，使內部空間保持氣密；藉此，當台車需要載送文物進出氣密室時，門檻能迅速與氣密室本體分離，使氣密室內外的地面位於同一平面上，使台車可平穩的進出氣密室；而當需要氣密時，門檻能迅速回裝，並藉由夾鉗組件下壓門檻，以封閉氣密室本體、門檻、與門扇之間的間隙。
