An optical-fiber fluorescence temperature detect system was proposed for hazard analysis and measurement of electromagnetic pulse of the electroexplosive devices(EED). The feasibility of the method was investigated in both theory and experiment. Different temperatures of EED can be obtained through different fluorescence lifetime, then the induced current is obtained, and finally the hazard of electromagnetic pulse of EED is measured. Experiment results show the system can analyze and measure the hazard of electromagnetic pulse of EED accurately and real-timely, so it is helpful to the research of security and reliability of EED.