A movable bed device is provided, including a fixed assembly, a plurality of balls, a bed board and at least one sliding rail. A plurality of receiving grooves are disposed on the fixed assembly. The plurality of balls are separately and freely rollable in the plurality of receiving grooves. The bed board is disposed over the fixed assembly and abuts against the plurality of balls. The at least one sliding rail is disposed along a straight line direction between the fixed assembly and the bed board in order to let the bed board only move along the straight line direction.本發明關於一種移床裝置，其包括一固定組件、複數圓球、一床板及至少一滑軌。該固定組件設有複數容置槽。該等圓球分別可自由滾動地限位於該等容置槽。該床板蓋設於該固定組件並抵頂於該等圓球。該至少一滑軌沿一直線方向設於該固定組件與該床板之間，以使該床板僅可沿該直線方向移動。
