Abstract: Corrosion of sea-crossing pier columns is becoming more and more serious all over the world. In order to improve the durability of piers of sea-crossing bridge,a large number of actual bridge data and relevant research was collected to summarize and analyze the corrosion phenomena of pier of sea-crossing bridge,the causes of corrosion and the commonly used corrosion protection measures. The results are as follows. Some existing sea-crossing bridge piers are corroded seriously,therefore the durability of sea-crossing bridges needs to be further improved. Some progress has been made in the research on anti-corrosion measures,but further research is still needed in industrialization promotion. Compared with the traditional concrete anti-corrosion measures,the measures of adding preservatives to concrete have obvious advantages in economy,construction convenience and so on. The internal addition of additives for concrete anti-corrosion is the focus of future anti-corrosion research on piers of sea-crossing bridges. The analysis has reference value to the future research on corrosion protection of sea-crossing RC peers.