The rapids shoal is one of the three navigation-hampering shoal types in mountain rivers: shoal, rapids shoal, dangerous shoal. This paper introduces and evaluates the five available methods for determining the hydraulic parameters of the rapids shoal abating, i.e. experiential analysis method, resistance of navigation method,prototype vessel test method, model vessel test method and mathematical model vessel test method. According to the typical standard ship type, this paper studies the hydraulic parameters of the rapids shoal abating for Yibin-Chongqing section in the Yangtze River by the resistance of navigation method and model vessel test method. It may be applied to the regulation design of the rapids shoal channel.