Corrosion of ocean engineering structures leads huge economic loses each year. Corrosion protection technology has already become a very important method for design and manufacture of ocean engineering structures. To decrease corrosive loses and guarantee the safety of engineering structures, extensive studies are invested to understand corrosion mechanisms and rules of engineering materials, and to develop technologies on corrosion control and protection. These research projects have produced and are producing a great amount of test data, reports, products, experiences, and so on. If all these data resources can be collected and organized in a unified platform, it will take great advantages for products design or manufacture on corrosion protection. A database, named Database on Corrosion of Ocean Engineering Materials and Structures (CDOSDB), was planned. For a designer or manufacturer, it should be considered in serving environment, corrosion property of material, methods on corrosion protection, and experiences on protection of real engineering structures. So, the CDOSDB is mainly include ocean environmental information, test data in real sea, simulating test data in lab, methods and products on corrosion protection, survey on corrosion status and protection of real engineering structures, corrosion knowledge and corrosion models. Because the related data and information were collecting from different research institutes and publications, in order to make full use of them, a uniform specification are arranged and standardized. A website is designed and the web addresses is http://www.dematers.com. It makes the database sharable.