Air treatment device and cabinet applying same

The invention discloses an air treatment device and discloses a cabinet with the air treatment device, the air treatment device comprises a shell, the shell is internally provided with a first heat exchange mechanism, a second heat exchange mechanism and a third heat exchange mechanism, the first heat exchange mechanism comprises a first cavity, and a condensation mechanism surrounds the first cavity; the liquid storage mechanism comprises a liquid storage cavity and a liquid changing assembly; a throttling mechanism is arranged between the second heat exchange mechanism and the condensation mechanism; the compressor is connected with the condensation mechanism and the second heat exchange mechanism; the fan assembly is installed on one side of the second heat exchange mechanism and used for accelerating flowing of air inside and outside the shell, and air flow flows through the second heat exchange mechanism. An outdoor unit does not need to be used like a conventional air conditioner, the overall structural