Fresh air system and air conditioner comprising same

The invention relates to the technical field of fresh air systems, and particularly provides a fresh air system and an air conditioner comprising the same. The fresh air system comprises an air duct part and a refrigerant circulating part, wherein the air duct part comprises air ducts, the air ducts have a first mode and a second mode, in the first mode, the air ducts comprise a first air duct and a second air duct, in the second mode, the air ducts comprise a third air duct and a fourth air duct, the refrigerant circulating part comprises a first refrigerant circulating system and a second refrigerant circulating system, at least one part of the surfaces of a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger is loaded with an adsorption material, the adsorption material can absorb moisture in air in the process that the air flows through the adsorption material, and the adsorption material can release water stored in the adsorption material under the condition