Uranium extraction methods could be divided into conventional uranium mining and in-situ leaching. Conventional mining is suitable for hard rock uranium resources, whereas ISL is usually adopted for sandstone uranium deposits. ISL is a new mining method by injecting specially formulated leaching solution to recover uranium. Concentration gradient distribution range is surely to be formed accompanied by a series of solute transport process during the leaching course. For the range and process above are closely related to coverage area (rate) of orebody, recovery rate of resources and pollution range, control of underground water and some other important problems, a monitoring job for the range and process is essential. Until now, there are no mature methods both in China and abroad and relevant researches are inadequate. A research on leaching solution range and solute transport process was taken by performing a group of tests of CSAMT and TDIP survey in Erlian Basin in the paper. Combined with the data from regional geology, hydrology, formation resistivity, logging, rock polarizability and characteristics of formation resistivity, the authors gave an interpretation and obtained a 2-D resistivity model and a polarization anomaly distribution model of the structure below the wellfield studied. A suite of geophysical monitoring methods for solute transport process of in-situ leaching uranium were made.