Abstract: In Jiangsu province, eight agencies participated in the intercomparison of external dose measurement. In comparison of 160 thermoluminescent dosimeter, the results showed that only one group of blind sample 1 was abnormal. The relative deviation of other 7 groups compared to the standard dose of 1 mSv was -16%—1%. The relative deviation of blind sample 2 compared to the standard dose of 4 mSv was -18.5% to 3.25%.The results showed that the measurement of seven laboratories were satisfactory.

Key words: TLD, dosimeters, cumulative dose, intercomparison