Studies have shown that learning approaches are able to promote the developments of computational thinking on students, including cooperative learning, project-based learning, online communication, Academic dialogue etc. Therefore, these learning approaches can combine with the traditional teaching in a more effective way. Blended learning may promote the developments of computational thinking on students. The paper takes the junior College students as the experimental objects, and carries a pretest-posttest study through unequal experimental and control groups. It approved that blended learning has a positive impact on the college student's computational thinking, i.e., they have an obvious progress.