Due to the serious scouring of water flow in the front area of Xinhai Wharf，the underwater mud surface elevation has been lower than the condition at the time of completion. Thus，it is necessary to reassess the structural safety of the wharf and the stability of the bank slope. The scour depth of the pile foundation is obtained by monitoring the topography of the underwater bank slope. According to the requirements of relevant specifications，the bearing capacity of the upper structure of the wharf，the bearing capacity of the pile foundation and the stability of the bank slope shall be rechecked and calculated. The results show that all indicators of structural safety meet the requirements of the specifications. However，the tensile stress of the pile body is close to the limit value. If the scour depth further increases，it will threaten the structural safety of the wharf. After comprehensive consideration，the scheme of the soft mattress of interlocking blocks and riprap is adopted to protect the bank slope.