The major focuses in the domain of structure-fluid-metallogenism system include the origin of metallogenic marerials, the chemical mechanism of activation, transportation and precipitation of metallogenic elements and the physic process of geofluid’s transportation and locating. Comparing with the other two focuses, the process physic of the geofluid's movement bears more difficulty and questions for the researchers. The current methods for the study of physic process of the geofluid's movement mainly consist of qualitative analysis, numerical simulation and analogue experiment. Based on the generalization and reasoning of basic geological phenomena, qualitative analysis indicate that the key problem of geofluid's transportation process is the physic mechanism of transportation process of polyphase fluid in the 3D dynamical structural frame. Yet this key problem goes beyond the extent of the research ability of the qualitative analysis method. Because the numerical simulation method neglects the dynamical change of penetrability and stress field during metallogenic process, it is devoid of the similitude to the reality and failed to deal with the problem too. Although the analogue experiment can simulate the transportation process of polyphase fluid in the 2D dynamical structural frame, it can't carry out the 3D experiment because of the limitation of the experimental conditions. But in virtue of the mutual complementary advantages of the three methods, the colligated application of those methods can discover the physic mechanism of transportation process of polyphase fluid in the 3D dynamical structural frame.