<p>This study investigates the enhancement of corrosion resistance in Zn-Al coatings by the application of novel ZIF-8 hydrophobic films, synthesized using a secondary growth method with varying molar ratios. The effectiveness of ZIF-8 films was assessed through electrochemical corrosion tests, scanning electron microscopy, atomic force microscopy, and electron probe microanalysis. Results indicate that ZIF-8 films prepared by the secondary growth method exhibit greater density and smoothness compared to those produced by traditional methods. The ZIF-8 hydrophobic films significantly improved the corrosion resistance of Zn-Al coating, with the ZIF-8 film at a molar ratio of 1:16 demonstrating the best corrosion protection performance. After 2&#xa0;h of corrosion, ZIF-8 films with a molar ratio of 1:16 demonstrated the highest corrosion resistance, achieving a charge transfer resistance (R_ct) of 13218 Ω/cm², which is two orders of magnitude higher than that of uncoated Zn-Al coating. ZIF-8 films exhibited significant corrosion protection potential on Zn-Al coatings, providing important theoretical and experimental support for the development of high-performance corrosion-resistant coating. This has broad application prospects, particularly in corrosion protection for metal structures in bridges and transportation infrastructure, such as the main cables of offshore bridges and cross-sea bridges.</p>