The spurious currents were studied based on the stationary droplet problem. The conception of spurious currents and their characteristics were described. The effect of surface tension and liquid viscosity on spurious currents was analyzed. It was found that there was a certain relationship between the average spurious velocity and the computing time. This conclusion could provide an idea to weaken or eliminate the spurious currents. The cause of the spurious currents was analyzed and found that the modification of the phase interface simulation method could weaken spurious currents obviously, and this conclusion was validated by the comparison of the simulation results of CLSVOF method and VOF method.