Direct numerical simulation is conducted to investigate the influence of compliant coating to the flow field and the drag reduction mechanism of the visco-elastics coatings. The numerical results indicated the suppression of the turbulent intensities over the compliant wall and turbulent skin-friction drag reduction by the compliant wall. The compliant coatings suppress the turbulent energy production and enhance the turbulent energy dissipation compared to those of the solid wall. The cross correlation between the displacement of the compliant wall and the velocity fluctuation is investigated to confirm the effect of the compliant wall to the flowfield in detail. The phase difference angle of the cross correlation is about 65 degrees. This motion has the roll to suppress the turbulent vortex near the wall. The drag reduction mechanism of the compliant coating can be explained as similar philosophy based on the v-control algorithm.