Combining with the study of analogue experiments and test analysis,the kinetics of precipitation and growth of AIN and MnS in non-oriented electrical steel produced by the CSP process is calculated.The results show that the precipitate phase particles of AIN and MnS in typical non-oriented electrical steel grades produced by the CSP process have grown to some extent in the soaking stage,but the precipitation contents are less than 20% of the total contents of nitride and sulfide.The precipitate phase particles of AIN and MnS have precipitated almost after the hot roiling process.The precipitation contents are more than 80% of the total contents of nitride and sulfide,but it is very late for the precipitate phase particles to grow at the end of the hot rolling process.