This paper shows comparison of the hydraulic characteristics and sampling efficiencies between theMinjiang Bedload-2 Basket Sampler(MB-2,China)and Toutle River-2 Pressure-Difference Sampler(TR-2,USA). The hydraulic efficiency of the MB-2 sampler is 0.91 while that of the TR-2 sampler is 1. 04.When the twosamplers are rested on the streambed, the turbulence intensity of water flow made by the TR-2 sampler is higherthan that by the MB-2 sampler. On the average,sampling efficiency of the TR-2 sampler is 1.84 times higher thanthat of the MB-2 sampler and the sampling efficiency varienec of the TR-2 sampler is 1.51 times higher than thatof the MB-2 sampler.Though the sampling efficiency of the TR-2 sampler is higher than that of the MB-2 sam-pler,that is to say,the stability of the sampling efficiency of the former is not better than that of the latter.Twoexperience expressions are obtained,of which sampling efficiency is a function of dimensionless variables ofu*t/b and b/d.