Taking Longchuanjiang River , Xiaojiang River and Niulanjiang River as the typical tributaries of downstream of Jinshajiang River , the equilibrium sediment transport flume experiments of the three tributaries were carried out. And then current formulae of bed load sediment transport rate were analyzed and summarized. On the basis of above study result, the bed load sediment transport rates of the three typical tributaries were calculated. According to comparison between the experiment results and calculated data, the conclusions are as follows ： The calculated results are relatively large whether they are calculated by the formulas derived on the basis of the energy  balance theory or the formula in which the slope of a river stretch is a major parameter. Taking all the hydraulic parameters into account, the Ackers White formula, the Einstein Brown formula and the sediment transport rate of bed load curve proposed by Yangtze River Scientific Research Institute are more suitable to such river reaches.