［Objective］The development of high-performance slippery coating aimed to addressthe challenges of surface icing and fouling in harsh environments.［Methods］ A zinc-aluminum layered double hydroxide（ZnAl-LDH）nanoarray was grown in-situ on an aluminum alloy substrate via a hydrothermal method. Sodium benzoate was incorporated as a corrosion inhibitor， and perfluorodecylsilane（PFDS） was applied to construct a superhydrophobic coating（LDH-PFDS）. Subsequently，silicone oil was infused as a lubricant to form a slippery coating（LDH-SLIPS）. The structure and composition were characterized by XRD，SEM，and FT-IR，while properties including wettability，antifouling（including antibacterial and anti-protein adhesion），anti-icing，and mechanical/ chemical stability were evaluated.［Results］ The LDH-SLIPS slippery coating demonstrated exceptional superhydrophobicity，with a water contact angle of 162.54°. It also exhibited remarkable antifouling performance，with antibacterial rates exceeding 99% against both Escherichia coli and Staphylococcus aureus，and effectively resisted protein adhesion. In terms of anti-icing properties，the LDH-SLIPS surface delayed ice formation for up to 225 seconds，representing a 1775% extension compared to the bare aluminum substrate. Additionally，the surface exhibited outstanding stability， maintaining its slippery characteristics after abrasion，scratching，ultrasonic treatment，and saline immersion.［Conclusion］ A slippery coating based on ZnAl-LDH was successfully fabricated， integrating multifunctional properties including antifouling，anti-icing，and high stability. This workprovided a novel strategy for mitigating surface failure of aluminum alloys in marine environments.