Abstract: Water is of particular importance for both life and industry. One of its functions,water-material interaction, plays a central role in many aspects. Based on tremendous research activities, it has been found that the atomic-scale interactions between water and materials affect their macroscopic behaviors, and as a result many anomalous properties are also observed. In this article we will describe some recent progress made in our group on water-solid interactions at the atomic scale, including superhydrophilic-superhydrophobic transitions induced by molecular self-supply, anomalous wetting induced by lattice mismatch, quantized water transport through graphyne membranes, and the mechanism of plasmon-induced water splitting.