To provide a system for cleaning an air environment securely realizing the cleaning of the air environment in a room by compulsorily taking outside air which sufficiently reduces each VOC concentration and is cleaned into the room.

This system for cleaning the air environment includes an air pump (3), cleaning means (4) for passing the outside air through water (20) to remove an air pollution substance, humidity means (5) for cooling the outside air after cleaning to adjust the humidity and adsorption means (6) for passing the outside air through an activated carbon to adsorb the air pollution substance on an air supply channel (1) for introducing the outside air into the room.