Theoretical and experimental results show that magnetic agitators can provide a simple passivemagnetic levitation method in which the levitator can be suspended stably for a long time． It studied this phenomenon，analyzed the causes of the suspension，and quantitatively analyzed the motion of the levitator (a combination of vertical oscillation，rotation and swing)．The experimental results agree well with the mechanical analysis model (using the Ｒunge-Kutta method to solve the binary second-order differential equations)．This research has implications for the movement of artificial swimmers and for the development of bidirectional microfluidic pumps，providing an alternative to complex commercial suspensors．