A communication quality detection method, a communication quality detection device and air conditioning equipment are disclosed. The method is used to process an object, and comprises the steps as follows: acquiring multiple pieces of detection data of a detection object at different time moments, wherein each piece of detection data contains the signal transmitted power and the signal received power of the detection object at a time moment; determining the influence weight of each piece of detection data according to the signal transmitted power in the detection data; and analyzing out the communication quality of the detection object according to the signal transmitted power, the signal received power and the influence weight of the detection object at different time moments. According to the invention, the communication quality of the detection object is determined according to the signal transmitted power and the signal received power of the detection object, and the problem on how to detect the communication quality and how to set the number and location of relays is solved.