Abstract: The present invention relates to a system and a method for energy-saving air conditioning control via QR (Quick Response) code. The system and the method for air conditioning control according to the present invention using a QR code generated in the vicinity of a location of an air conditioning apparatus or a group of air conditioning apparatuses corresponding to a predetermined space to be cooled. To control the air conditioning apparatus or the group of air conditioning apparatuses, the user needs to be at the position where a QR code is attached to scan the QR code combined with a valid user identifier to access an air conditioning control interface with one or more than one predetermined air conditioning control mode corresponding to the air conditioning apparatus or the group of air conditioning apparatuses associated with said scanned QR code.