Space inflatable unfolded cabin

The invention relates to the technical field of space capsules, in particular to a space inflatable unfolded cabin. The cabin comprises an air brake cabin, a cabin core column and a flexible shell, the cabin core column is arranged in the flexible shell, the air brake cabin is arranged at the upper end of the cabin core column and arranged on the outer side of the flexible shell, and the flexibleshell is unfolded after being inflated; the cabin core column comprises a core column frame which is provided with an upper end layer, a middle layer and a lower end layer in sequence, the upper end layer and the lower end layer are each internally provided with an end layer plate component, a middle layer plate component is arranged in the middle layer, a space expansion component is arranged onthe outer side of the cabin core column, and provided with multiple expansion boards, expansion support rods are arranged between the adjacent expansion boards, a driving unfolding mechanism is arranged in the core column fram