Based on an analysis of the geochemical exploration data obtained in Erzhihala area, some conclusions have been reached: when 1∶50 000 stream sediment survey is conducted in Qilianshan subnival region represented by Erzhihala area, the sample granularity of -40 mesh can yield relatively good result; when the work is carried out in areas over 3 000 m above the sea level, the adoption of -40 mesh in 1∶25000 ditch secondary soil survey is not very reasonable; when the mixed rock fragments and lithic materials whose sizes are smaller than 0.5 cm are collected and the samples are analyzed according to the primary halo method, anomalies can be distinctly delineated. Geochemical outcomes imply that gold mineralized bodies do exist in Erzhihala area, and 1∶10 000 lithic anomalies can basically delineated the limits of mineralized bodies.