Navigation lamp is usually set at offshore breakwater head to ensure the safe navigation of ship,however,as the basic structure of navigation lamp pile,there is no code or handbook can be referred for the design of foundation and maintenance channel.In this paper,design of navigation lamp pile foundation and maintenance channel for offshore breakwater is adjusted and optimized gradually based on the actual project.Then,a reasonable and feasible composite structure of navigation lamp pile foundation and maintenance channel for offshore breakwater is put forward.The composite structure comprehensively considers the overall stability of the structure under the action of wave,the influence to the artificial armor block installation due to navigation lamp pile foundation,the convenience of maintenance channel using,and the feasibility for the site construction.The composite structure of navigation lamp pile foundation and maintenance channel for offshore breakwater in this paper can provide a certain reference for the design of other similar port projects.