The coked production took the steel industry an important constituent, is playing the more and more vital role in the national economy. In the market economy competition can more intense today, how enhance the coked product the quality and the output, reduces the energy consumption, and reduces the environmental pollution practically, is one item urgent and the vital duty. Coal blending compared to precision direct influence coke quality, then influence entire coking plant production and benefit, therefore the enhancement realization coal blending system automatic control, is one has the practical significance topic extremely.The paper first to the automatic coal blending system application background, the trend of development has carried on the summary, take the coking plant automatic coal blending system as the object of study, has thoroughly analyzed influence coal blending quality many factors and the improvement measure, and has carried on the analysis to the automatic coal blending system function demand, has designed in this foundation based on the Fuyyz-PID compound control strategy automatic coal blending system overall structure and the hardware realization plan. The paper used Intellution Corporation the iFix configuration software to develop the automatic coal blending control system on position machine monitoring software, realized the flow control algorithm, the accumulation through the configuration software has summed and simulates, digital functions and so on quantity input output connection as well as man-machine connection picture. Paper research results already in Shandong yan ore international coking limited company coking plant investment production, moreover this factory has developed into the annual production to be possible until now to reach 3,500,000 ton coke production base. The scene movement result indicated, system movement stable reliable, control precision high, coal blending precision about 99%. This paper has the chart, the table, reference. Key word: Coking plant; Automatic coal blending; Fuzzy-PID compound control; Scene movement