Due to the special sea area in the marine climate environment,the sea harbor wharf faces sea water,sea fog and other corrosions,which lead to damages of the main wharf structure.Taking a sea harbor wharf in Zhejiang province as a study case,we probe into the structural repair and reinforcement technology for the wharf to provide a scientific basis for the application of the sea harbor wharf in use,repair and reinforcement of the corroded concrete members,as well as the reconstruction and extension of the sea harbor wharf.