This article focuses on the teaching of circuit foundation courses in vocational colleges and explores in depth the application of MWorks simulation software. By analyzing the limitations of traditional circuit foundation course teaching, this article elaborates on the advantages of MWorks software in teaching, including intuitive presentation of circuit principles, provision of rich component libraries, and powerful analysis functions. Detailed teaching practice cases based on the software were introduced, such as simple circuit construction and analysis, complex circuit fault troubleshooting, etc., and the application effect was demonstrated by comparing actual teaching data. The results show that MWorks simulation software effectively enhances students’ learning interest, practical ability, and theoretical knowledge mastery, providing strong support for the improvement of the teaching quality of circuit foundation courses in vocational colleges.