Based on the analysis of the existing condition of the original wharf, and combining the berthing operation requirements and rear development needs, we study the necessity of upgrading the wharf, and put forward the plan reconstruction scheme of the wharf, i.e. setting two dolphins in the berth length direction to meet the berthing requirements of big ships, and adding a new loading and unloading platform of 30 m long upstream and downstream respectively is to meet the berthing and loading and unloading requirements. The corresponding structure renovation plan is also proposed. Through renovating original wharf's plane and structure, the berth ability of the petrochemical wharf is upgraded from 25 000 DWT to 50 000 DWT.