The present paper makes a systematic analysis of several stream sedimentore-prospecting methods and analytic techniques for samples in the Dongzhongdaice-Water accumulation area, and, as a result, the information concerning the effectiveness of the most important metallogenic element-copper-in ore prosp ecting of this area is obtained; the heavy mineral survey gives extremely good result; the effectiveness of stream sediment survey depends on the adopted ana lytic techniques for samples; cold extraction method is also exceptionally effe ctive, especially when the grain sizes of the samples after sieving are less than100 mesh; the total extraction methods such as spectral analysis and heating dissolution and colorimetry are of no results, as is also the grey heavy mineral survey.