［Objective/Significance］ Constructing a superhydrophobic surface can effectivelysolve phenomena such as corrosion，scaling，and waxing in the use of metal materials. It can also endowmetal materials with special functions such as self-cleaning，drag reduction，and wear resistance，and has high application value and market prospects.［Analysis/Discussion/Progress］The article brieflyintroduced the construction and working mechanisms of superlyophobic coatings，systematicallysummarized recent research achievements in applications for anti-corrosion，anti-scaling，and anti-waxing， and analyzed their underlying principles and advantages.［Conclusion/Prospect］ Superlyophobic coatings encountered challenges in practical applications such as durability of protection，fabrication costs，and environmental adaptability. To develop high-performance and multifunctional coatings，research efforts should focus on optimizing surface properties，enhancing long-term protective performance，and improving coating composition.