Background: The radioactivity levels of rare earth residues in Jiangsu province are not well known

and there are no explicit laws on their regulation.Purpose: By analyzing the radioactive nuclides in rare earth residues of Jiangsu province

we plan to propose some suggestions on volume reduction.Methods: HPGe γ spectrometry sourceless efficiency calibration method is playing an important role in the radioactive analysis because of its high accuracy and efficiency.It can be used without standard radioactive source and is easy to be measured on the spot.The reliability of method was verified by using IAEA reference materials.Results: The results show that in the rare earth residues the radioactive equilibrium of uranium and thorium decay series has been broken

and the radioactive levels in different samples have obvious difference.Conclusions: Based on the results

this paper investigates and analyses the radioactive residues of rare earth smelting and separation plants in Jiangsu Province

and puts forward some suggestions on volume reduction.