It is urgent to find effective countermeasures to guide students return to classroom. Based on survey data and practical work, the principle, the implementation and the key issues of "vortex effect" to prevent and deal with the phenomenon of students' deviation from classroom are introduced in detail in this paper. It shows that, not only the application of this principle in teaching and educating students is practical and feasible, but also the effect of guiding students return to the classroom is remarkable. The ideas and methods are looking forward to having reference for the peers.