［Objective］As the traditional anti-corrosion coating which direct doping of corrosioninhibitor is easy to trigger the problems of early release，coating structure damage and attenuation of protective effect，this paper constructs a self-repairing epoxy composite coating system based on pH responsive intelligent nanocontainers.［Methods］ Silicone nanocontainers（HPMO） with hollow mesoporous structure were designed and synthesised by the hard template method，combined with vacuum impregnation technique to load the corrosion inhibitor 2-mercaptobenzothiazole（MBT）， the smart anticorrosion system of HPMO@MBT was then constructed. The epoxy composite coatings wereprepared by regulating the addition amount of HPMO@MBT nanocontainers. The structural characteristics of the nanocontainer，the release behaviour of the corrosion inhibitor and the anticorrosion performance of composite coating were systematically investigated.［Results］The results showed that HPMO possessed a high specific surface area and uniform mesoporous distribution，and the MBT loading reached 17. 5%，which could be released quickly in response to the acidic environment.Electrochemical impedance spectroscopy（EIS）and scratch tests revealed that the composite coatingexhibited a significantly slowed low-frequency impedance decay rate during 15 days of immersion in a
3. 5%NaCl solution，when HPMO@MBT mass fraction is 1%. Over a specific time scale，it demonstrated an evolutionary shift from decline to recovery or stabilization，reflecting the synergisticcontribution of the coating's barrier function and interfacial inhibition effect. Scratch immersion resultsrevealed enriched distributions of N and S elements within the damaged area，indicating directed migration of the corrosion inhibitor under corrosion-induced conditions and its participation in interfacial protection. Excessive HPMO@MBT addition（>1%）may weaken coating performance due to nanocontainer aggregation and increased local porosity.［Conclusion］The above results indicate that by reasonably designing the structure of the nanocontainer and the HPMO@MBT addition amount，the stable storage and environmentally responsive release of corrosion inhibitors can be achieved under thepremise of ensuring the structural integrity of the coating，the anti-corrosion stability of the coating under the condition of local damage is enhanced.