Rolling transportation in China is mainly concentrated in Bohai bay，Qiongzhou strait and Zhoushan islands. Dalian port in Bohai bay has become an important channel connecting the north and south economic arteries of China. In order to adapt to the trend of large rolling capacity of passenger ships in Bohai bay，improve the utilization rate of port resources，and meet the transportation demand of rolling market in Bohai bay，the comprehensive evaluation system for the site selection of super large ro-ro passenger berth is constructed from the four aspects of market demand and city supporting conditions，tourism resources，port infrastructure and foreign comprehensive transportation to make a comprehensive evaluation of the alternative port sites. Through the evaluation and analysis，considering the current situation and future development trend of the alternative port sites，it is recommended that the eastern part of the Heshang island port be selected as the site of ro-ro passenger berth.