Abstract: The paper proposed a design scheme of signal transmission of mine locomotive based on leakage communication technology, and focused on how to send state information encoded into DTMF signals of the locomotive to certain handset and display the state information in text fast, accurately and real-timely through leakage communication platform. The scheme realizes wireless transmission of locomotive signals, and can improve security of underground locomotive transport and safety management capability of underground locomotive deployment and transport. The actual application showed the feasibility and effectiveness of the scheme.