Abstract: Some typical technical routes of dry reprocessing for spent nuclear fuel were reviewed and the analytical methods used in the processes were summarized. Several methods for on-line monitoring were demonstrated in detail, including electroanalytical methods, UV-Vis absorption spectrometry, X-ray diffraction analysis, in-situ Raman spectrometry, in-situ EXAFS analysis and in-situ NMR analysis. On-line analytical methods can give real-time information of the morphologies and structures. As the effective complementarity of on-line analytical methods, off-line analytical methods were discussed based on different states of the study object, such as the one in a gas, solid or liquid state.