Abstract: In view of shortcomings of bad stability, high failure, difficult maintenance existed in real-time transmission system of video, audio and monitoring data of condition for shearer because of using local area wireless network, cable or drag communication cable, the paper put forward a design scheme of integrated transmission system of multi-channel audio, video and real-time monitoring data with embedding single radio frequency coaxial cable in main cable of shearer. The system adopts a design method that modulation frequency of data transmission is higher than modulation frequency band of video monitoring signal, so as to avoid influence of data communication on quality of monitored image, and guarantee low bit error rate of control data communication because that the data transmission has higher power margin.