This article aims to explore the teaching mode of using MWorks simulation software to promote teaching in circuit fundamentals courses in vocational colleges through competitions. By analyzing the limitations of traditional teaching, this article elaborates on the functional advantages of MWorks software and its specific application methods in promoting teaching through competitions, including how to combine skill competitions for teaching design, organizing internal selection and training, and other aspects. Practice has shown that this model effectively enhances students’ professional skills, innovation ability, and teamwork spirit, while also promoting the improvement of teachers’ teaching level. Finally, the problems encountered during the application process were reflected upon, and improvement suggestions were proposed, providing a reference for relevant teaching reforms in vocational colleges.