Abstract: Based on the certain analysis on the electric control system of the available mine roadheader, a design plan of the electric control system for the mine ro adheader was provided based on PLC.Taking S7-200 as the control key and with the application of the module structures, the control and protection of each electric mo tor in the roadheader could be realized.The paper stressed the introduction on the hardware design and the software preparation of the system.In comparison with the C onventional electric control system of the roadheader, the new system with the full protection function and the safe and reliable control could meet the requirements of t he heading and production in the full seam and semi-coal and rock gateway.