In order to meet the needs of wireless FM communication in the middle and short distance, a design scheme of frequency modulation transmitting and receiving system based on wireless communication technology is proposed. This system achieves the functional design of FM transmitting and receiving by using RDA5820 chip, and realizes the data transmission between RDA5820 and STC89C52 based on the IIC bus. The system working state is displayed in real time through LCD screen. The experimental results show that the system has good performance of transmitting and receiving audio signals in the range of 87.0MHz to 108.0MHz, and its maximum transmitting and receiving distance is up to 800 meters, which well achieves the wireless FM communication in the middle and short distance. This system can be applied to the campus FM broadcasting and other fields.