By reviewing the development history of warp land dams construction in soil and water conservation， this article expounds the important significance in doing well in warp land dam construction demonstration and shows the driving roles of the demonstration plays in the dam construction. Focusing on the four phase of feasibility study，design construction management，operation and maintenance in warp land dam construction，some ques?tions related to warp land dam construction for demonstration，attention for which should be attached are analyzed. Also the advantages of conducting warp land dam system construction with individual tributary as one unit are i?dentified in terms of soil and water conservation in the Yellow River basin and warp land dam development for a long run and some crucial circles in implementing warp land dam warp land dam system construction in tributary dam system are listed，aiming at providing reference for counterparts eng aging in warp land dam construction.