A simple liquid phase method was used to deposit ZnO nano-sheets and nano-flowers on the stainless steel mesh at room temperature. Then, the superhydrophobic stainless steel mesh was modified by the impregnation method with the low surface energy substance stearic acid. The surface morphology, crystal structure, wettability, wear resistance and oil-water separation performance of the deposited stainless steel mesh were characterized. The results showed that the surface of the stainless steel mesh was composed of micro-nano structure ZnO with nano-sheets and nano-flowers. It was superhydrophobic and had a water contact angle of 161 °. The oil-water separation efficiency was 98%, and the separation efficiency remained at 95.5% after 20 cycles of recycling. It had good mechanical wear resistance and showed chemical stability in high salt environment.