Abstract: Considering the long-term radiological risk on the public and environment resulted from ¹²⁹Ⅰ in airborne effluents from nuclear reprocessing facilities in China, the collection and measurement methods of ¹²⁹Ⅰ available for the monitoring of radioactivity in airborne effluents are analyzed, China’s regulatory requirements concerning emissions of ¹²⁹Ⅰ in airborne effluents from nuclear reprocessing facilities are introduced, and suggestions for the monitoring and supervision of ¹²⁹Ⅰ in airborne effluents from nuclear reprocessing facilities in future are proposed.