Since the gravity wharf structures are becoming larger,common fault exist in various parts,such as cracks in the breast wall,displacement & post-construction settlement,as well as ponding at the rear due to the uneven settlement of the wharf’s surface layer,which affect the normal use of the wharf.Based on the design and construction experience,we probe into the mechanism and harm of the quality faults,and provide countermeasures,which are proved feasible and effective,and thus may serve as reference for similar projects.