The invention discloses an air conditioning system which comprises a control device, air conditioning equipment and a signal detecting and processing unit. The signal detecting and processing unit is used for detecting human body function state parameters and conveying the human body function state parameters to the control device, the control device is used for judging whether the human body is in the state of fatigue or not according to the received human body function state parameters and controlling the running mode and/or operating parameters of the air conditioning equipment according to judgment results, and therefore the feeling of fatigue of the human body is reduced or eliminated. By means of the air conditioning system, the state of fatigue of the human body can be detected, the air conditioning equipment can run in an appropriate mode or with appropriate parameters when it is determined that the human body is in the state of fatigue, and therefore the feeling of fatigue of the human body is better reduced or eliminated.