Abstract: The separation of lanthanides and actinides is the top priority in nuclear industry. The conventional solvent extraction method has complicated steps, and a large amount of secondary waste liquid will be generated during the extraction process. Supercritical fluid extraction technology is a new type of chemical separation technology. Due to it’s simple steps and clean process, more and more researches on the application of this technology to metal ion extraction have been carried out in the last few years. The research progress in the extraction of lanthanides and actinides has found that most of the current research has focused on supercritical extraction technology to extract uranium from various complex samples. Through the comparison and summary of the samples, it is analyzed the technology will be used in the industry.