The problem as to whether a stable and traceable geochemical model can be obtained by different sampling densities and different sampling time spans constitutes an important basis for testing the reliability of geochemical methods. In this paper, the authors conducted fine sampling densities and sampling time spans over the Huaniushan Pb-Zn deposit of Gansu Province. The conclusions are as follows: the media values and background values of elements obtained by different sampling densities and different sampling time spans are consistent, the geochemical patterns are very similar and reproducible, and so the stable and traceable geochemical patterns can be achieved. The larger the sampling spacing, the more scattered the values, suggesting that the distribution of elements is characterized by local heterogeneity. It is thus held that researchers can portray the details of changes of geochemical patterns and further track the mineralization bodies by increasing the sampling density.