【Objective】 To analyze the dose of radiation exposure of medical staff during prostate cancer treatment by125 I brachytherapy.【Methods】 The preoperative,intraoperative and postoperative dose of radiation to the medical staff during125 I brachytherapy was tested by thermoluminescent dosimeter(TDL) and the dose rate was calculated.【Results】 The preoperative dose rate for the doctors' fingertips,eyes,thyroid and chest was 30.26,1.80,2.23 and 0.00 μGy/h respectively.The dose rate for radiotherapy doctor,ultraso...