Sediment feeding hopper is an most important technique for researches of sediment transport capacity and soil erosion model building. One self-controlled s,diment feeding hopper was developed and the structure and working theory were discussed in detailed. The stability and relationship between running sp d and sediment rate were tested. The results indicted that the kind hopper had very high stability and the maximum relative error was less than 15.5%.There is every fine linear correlation existing between motor conning sped and sediment feeding rate. Sediment fe,ding rate increased as motor running sped increasing. The range of sediment feeding rate was 0-1120g/s and should be used in the researches of relative fields, such as sediment transport capacity of overland flow.