The metallogenic geological setting of the ore concentration area was related to the crustal deformation during the Paleoproterozoic geological evolution of the crust and the substance migration under the chemical action. The intrusive rocks in Guangdong caused a variety of geological processes, and were associated with the formation of various metal deposits. In order to study the relationship between magmatic rocks and mineralization, the authors used gravity data to analyze the distribution of intrusive rocks and revealed that the residual gravity anomaly resulted from the reaction of magmatic rocks. It is held that, using multi-scale wavelet decomposition approach, we can analyze the spatial distribution of intrusive rocks and the intrusive path to sum up the gravity field characteristics of the ore concentration area and, in combination with geological knowledge, we can eventually predict the the ore concentration area.