Abstract: Considering the complex inner environment of blast furnace(BF) and difficulty in measuring the real-time gas flow distribution of BF,a recognition method for the gas flow distribution of BF is proposed based on the temperature field of burden surface.Firstly,the measuring information of BF process is fully utilized to establish the temperature field of burden surface.Secondly,the gas flow developing level in the central and peripheral regions of BF is extracted in order to employ fuzzy C-means clustering to recognize distribution pattern of gas flow.The experiments show that the method proposed can achieve the distribution status of the gas flow accurately,so that it provides an efficient way to guide burden operation.