Microwave absorbers are the core components of radar absorbing coatings, and researchers continuously optimize their composition, structure, and preparation processes to achieve ‘thin, light, wide, and strong‘ properties. In addition to absorption property, environmental stability is also an aspect that researchers are focusing on. Coatings prepared by magnetic absorbers are prone to oxygen corrosion in marine environments, which will lead to the deterioration of the microwave absorption property and further decrease in the stealth performance of equipment. Therefore, the development of dual-functional absorbers with excellent microwave absorption and anti-corrosion effects is of great significance for improving the long-term service capability of equipment in corrosive environments and reducing the daily maintenance cost.