The micro-nano composite structures with different micromorphologies are prepared on the nickel-aluminum bronze alloy surfaces by a picosecond laser, and then surface-modofied by stearic acid. Scanning electron microscopy and X-ray diffraction and others have been performed to characterize the morphologies and chemical composition. The research results show that the contact angle of the surfaces obtained by picosecond laser processing and surface modification of stearic acid is more than 150°. The samples have different surface morphologies and wettability under different laser fluences. With the increase of laser fluence, the sliding angle of the modified sample surface gradually decreases. When laser fluence is 6.85 J/cm 2, the sliding angle decreases to 7°. With the further increase of laser fluence, the sliding angle gradually increases again. The corrosion resistance test results show that the surface of superhydrophobic nickel-aluminium bronze alloy has better corrosion resistance. The superhydrophobic surface of nickel-aluminium bronze alloy can be machined with optimized process parameters, which is helpful to improve the corrosion resistance of nickel-aluminium bronze alloy.