Abstract:With development of technology of in-situ leaching uranium mining, it is difficult to define some new techniques by traditional classification methods by which the in-situ leaching techniques are grouped into acid leaching and alkaline leaching. Confusion and inconvenience occur during technological and academic exchanges due to inconsistencies between classification and actual in-situ leaching conditions. Based on the review of main techniques of in-situ leaching and uranium migration theory, the classification methods of in-situ leaching uranium mining technique were discussed, and improved classification methods were proposed based on pH value of leaching solution and migration form of dissolved uranium respectively.