［Objective］To develop an intrinsic fluorescence-based monitoring strategy utilizingpolyamide 650 curing agent for real-time tracking of curing，aging，corrosion，and damage behaviors in epoxy coatings， enabling non-destructive service-life assessment.［Methods］The inherent fluorescence of polyamide 650 was employed to dynamically analyze curing and aging processes ofepoxy coatings via fluorescence spectroscopy. Corrosion behavior in 3. 5%NaCl solution was characterized using electrochemical impedance spectroscopy（EIS）. Damage and corrosion zones were visualized through UV-excited fluorescence imaging.［Results］Complete curing of epoxy E51 coatings was achieved after 6 h at 80 ℃，with fluorescence intensity significantly increasing during cross-linked network formation. UV irradiation induced a rapid 20 min decline in fluorescence intensity and a 14 nmredshift in emission peaks；FT-IR confirmed amide group degradation as the primary aging mechanism. After 144 h immersion，the impedance modulus decreased to 10⁷ Ω ·cm²，synchronizing with fluorescence attenuation. Fe³⁺ generated in marine environments exhibited fluorescence quenching， enabling corrosion warning. Graphene oxide（0. 1wt%）-reinforced composite coatings demonstratedenhanced corrosion resistance with retained fluorescence-based warning capability.［Conclusion］This intrinsic fluorescence technique facilitates dynamic，full-lifecycle monitoring of epoxy coatings.Quantitative correlations between fluorescence intensity and damage/corrosion severity provide reliableservice-life indicators without compromising coating performance via external probes，showing significant promise for marine anti-corrosion applications.