A multi-room air-conditioning apparatus (100) includes an outdoor unit (101), a relay unit (102) connected to an outdoor unit (1) by first and second connection pipes (21 and 22), and a plurality of indoor units (103) connected to the relay unit (102). The outdoor unit (101) includes a second gas-liquid separating device (14) provided on the suction side of the compressor (1). The suction side of the compressor (1) and the second gas-liquid separating device (14) are connected to each other by a gas-side outlet pipe (26) and a liquid-side outlet pipe (25).
