Superhydrophobicity has attracted intensive research over the years and still an interesting topic in current studies.Superhydrophobicity originates from the unique "self-cleaning"characteristics of a lotus leaf: rain drops tend to bead on the leaf and easily roll off,carrying away any dust or contaminant, which is also called the "lotus effect".The "lotus effect" or "self-cleaning" function show great potentials in many fields such asself-cleaning of window glasses of high level buildings, deicing of airplane surface, etc.Surfacesuperhydrophobicitycan be induced by lowering the surface free energy and/orforming of specific surface micro-nano structures.Available approaches for superhydrophobic surfaces include etching, lithography, sol-gel process, layer-by-layer assembly and other physical or chemical methods.Among of which the ultrashort laser ablation is an enabling approach dueto its powerful capability to fabricate precise, designable micro-nano structures for almost any materials, especially hard engineering metals or alloys.Based on our extensive work on formation of various kinds of micro-nano structures on metal or alloy surfaces by ps or fs lasers, we have fabricated large area superhydrophobic surfaces on Cu,Al,Ti, Stainless steel, high speed steel and H13 etc.In thispresentation, we will report the academic issues and engineering issues related to the fabricating of superhydrophobic surfaces by ultrafast lasers.The academic issues cover (1) wettability transition over time on micro-nano structured metal surfaces;(2) formation of superhydrophobic/adhesive surfaces (the rose surface)with adhesion control;(3) the mechanism of deicing performance based on superhydrophobicity.The engineering issues include: (1) durability of surface micro-nano structures and superhydrophobicity;(2) mass production and low cost production of superhydrophobici surface via micro-nano printing.