In order to improve the berthing capacity, we carry out the reinforcement and reconstruction design to a container terminal. Considering that the beams on both the front and the back of the pier lies on one axis, we propose a new solution in which the front and the back of the pier are hinged by the dowel bar. Software Easydoing, Robot, etc. are used for the internal force analysis of the pier structure before and after the reconstruction.It is concluded from the analysis and the results of the dowel-bar test site that the new solution of reinforcement and reconstruction can surely improve the stress distribution of the pier structure. The reinforced and reconstructed pile-supported pier can meet the berthing requirement for all vessel types. In addition, the front and the back of the pier being hinged together have the advantages as more construction convenience, shorter construction period, less effect on routine operation and lower cost. The solution proposed also provides a new thought for the design of the reinforcement and reconstruction.