A compartment interior air-conditioning device which is equipped with gas composition adjustment units (40, 60) having gas separation membranes, and adjusts the composition of the compartment interior air inside a storage compartment (1) such as a container, the compartment interior air-conditioning device being further provided with pressure adjustment valves (46, 66) for adjusting the pressure of air supplied from air pumps (36, 37) to the gas separation membranes of the gas composition adjustment units (40, 60).
