Abstract: An intercomparison is made between CIAE two pieces of ~(238)U sample deposits and IRK stan-dard ~(238)U sample deposit at PTB, IRK and CIAE. Four methods are used in the study: 1. A fastneutron fission yield ratio measurements are carried out at the PTB cyclotron facility. 2. Absolutemeasurements mass of ~(238)U sample deposits are performed by means of 2πα gas-flow proportionalcounter at IRK. 3. Absolute measurements mass ~(238)U sample deposits are performed by means of2πα multiple--wire gas-flow proportional counter at Division of Radiometrology, CIAE. 4. Themass of two pieces of ~(238)U sample deposits are determined by measuring the alpha-particle activityin Department of Nuclear Physics, CIAE. This investigation produced the following calibrationvalues for CIAE two pieces of ~(238)U sample deposits: 860. 25±6. 02 micrograms and 913. 96±6.40 micrograms, respectively.