Abstract: Reaction kinetics of metallurgical physical chemistry which was successfully applied in metallurgy(as ferrous metallurgy、non-ferrous metallurgy) became an important theoretical foundation for subject system of traditional metallurgy. Not only the research methods were very perfect, but also the independent structures and systems of it had been formed. One of the important task of metallurgical reaction engineering was the simulation of metallurgical process, then the mechanism of reaction process and the conversion time of different control links should be obtained accurately. Therefore, the methods and results of reaction kinetics in metallurgical physical chemistry were not very suitable for metallurgical reaction engineering. In order to provide necessary transmission and reaction kinetics parameters as well as the conversion time of different control links for definite conditions of solving transmission and reaction equations in metallurgical reaction engineering, a new idea for researching kinetics mechanisms in metallurgical reaction engineering by employing sectional method was proposed. Then the comparison of results between the two methods and the further development of sectional method were discussed in this paper. As a research method for reaction kinetics in metallurgical reaction engineering, sectional method could not only satisfy the self needs of metallurgical reaction engineering, but also provide necessary guarantees for establishing its independent subject system.