In coal production and transportation systems, steel cord belt conveyor was widely used to enhance the underground transport system, mainly charged with the task of coal transportation in all regions, due to the geographical and geological conditions underground particular, the presence of large mining pressure, fast roadway deformation, kick drum serious and other adverse factors, the steel cord belt secured the normal operation caused great problems. To solve this problem and ensure the completion of the mine production tasks, ensure safe and efficient operation of the belt, through fieldwork and analysis, a reliable monitoring tape technology devices within the cord in the operation of changing circumstances was designed, with describing its system, provided technical reference for the similar situation.