In order to meet the intelligent production of blast furnaces,two 5 100 m3 blast furnaces of Shandong Iron and Steel Group Rizhao Co.Ltd.were equipped with a set of blast furnace expert system.In order to make the blast furnace ex-pert system close to production,the project team optimized and adjusted the models of the expert system,and added the la-dle docking system,mine tiling system,hot blast furnace optimization furnace system,etc.,according to the production needs,to provide more technical support for the blast furnace production.