Abstract: Based upon comprehensive studies on the lifetime evaluation methods of nuclear tube fuses, a fuse lifetime anticipation model based on the theory of electromigration was determined, and a set of fuse lifetime evaluation system was developed. This system enables the collection of accurate and completed lifetime test data which can be analyzed and processed, from which the anticipated fuse lifetime can be evaluated. Finally, an example of lifetime tests for TDP44-1A type fuse was given to verify the effectiveness of the evaluation methods mentioned above.