Abstract: According to a domestic maintenance and construction case for submarine cables of fan collectors in intertidal zone of offshore wind farm, overall deployment, key construction steps and post-protection schemes of submarine cable were introduced.Proposals for the operation and maintenance of submarine cables in intertidal zone were proposed, which could provide feasible cases for the maintenance and protection of similar submarine cables in the future, and have certain significance for the maintenance of submarine cables in offshore wind farm and island networking projects.