[en] An intercomparison of γ-spectrometry measurement and analysis was organized by the Japan Chemical Analysis Center (JCAC), the National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention (NIRP, China CDC), and the Radiation Monitoring Technical Center of Ministry of Environmental Protection, Chinese (RMTC). The main objective of this study was to assess the γ-spectrometry measurement and analysis technology. The JCAC completed the collection and preparation of soil and powdered rice samples. Three laboratories compared the measurement of seven radionuclides that included two samples of "2"1"4Pb, "2"1"4Bi, "2"0"8Tl, "2"2"8Ac, "4"0K, "1"3"7Cs, and "1"3"4Cs with γ-spectrometry. During the studies conducted at the laboratory, the calculated value E_n was found to be the total uncertainty data of the reported activity. Except "1"3"4Cs in powdered rice sample, the calculated E_n between each of the two laboratories was <1. The measurement results are acceptable except "1"3"4Cs; therefore, measurement results in the three laboratories were consistent within a certain range except in the case of "1"3"4Cs. Although there is a need to improve the accuracy of measurements and analysis of "1"3"4Cs, an intercomparison was conducted of the tested levels on radionuclide analyzed in the three laboratories. - Highlights: • An intercomparison of γ-spectrometry measurement and analysis was organized. • Three laboratories compared the measurement of seven radionuclides. • Results for "4"0K, "2"0"8Tl, "2"1"4Bi, "2"1"4Pb, "2"2"8Ac, and "1"3"7Cs were well matched between two participants. • The results in the powder of the rice sample belonging to "1"3"4Cs were the only ones assigned “not acceptable”.