［Objective/Significance］ Microbiologically influenced corrosion（MIC） caused byalgal attachment poses a serious threat to metals，concrete，and coating. This paper reviews the corrosion behaviors and mechanisms of algae on these substrates，as well as the recent progress in algal inhibitors in coating.［Analysis/Discussion/Progress］Algal adhesion on metal surfaces can induce localized corrosion and accelerate pitting. On concrete，the attachment of algae accelerates concrete aging and reduces its compressive strength. For coating，algal colonization induces stress cracking andaccelerates degradation. The primary mechanisms of algal inhibitors include disrupting the integrity ofalgal cell membranes，leading to cell death，and inhibiting key cellular processes such as photosynthesis by targeting organelles like chloroplasts.［Conclusion/Prospect］Future research on algal inhibitors should focus on enhancing environmental compatibility and achieving long-lastinginhibitory efficacy.