According to the Huaxi Group 2# blind inclined shaft hoisting machine adopts TKD-A control system in speed control performance is poor, the control circuit is complex, high noise, stability and low reliability, this paper proposes a SCR-D system to replace the original scheme of reforming the electric control system. The paper introduces the structure and working principle of SCR-D system, shows the main equipment selection of the main circuit, and gives the system installation and adjustment. The result shows, the reformed electric control system has characteristics of perfect protection, control with high precision, good energy saving effect. It achieved the expected goal.