A water strider having three pairs of feet could walk easily on water,which is a great challenge for human or robotics.Bio-mimetics of water striders hydrophobic legs that can stand stable on water surface helps us step forward to moving over the water.The enlarged surface tension of the legs could balance the macro insect robot weigh on liquid.A number of reports have studied on this insect hierarchical structure,however,almost no research address the challenge that could enable efficient movement on water surface.Herein we represent a smart micro-robotic system which could travel on the surface and mimic the walking behaviour.