Abstract: A quantitative method was proposed for evaluating the consistency of burden distribution in the width direction of a sinter machine. Based on the theory of sintering processes and the basic principle of aerodynamics, a mathematical model that describes the evaluation index of evenness was established by testing the exhaust gas temperature of the sintering machine to solve the shortage of artificial and qualitative judgments, and an online monitoring software system was developed by use of the mathematical model. The resuits show that the mathematical model can objectively and quantitatively reflect the difference in density along the width of charge beds.