[en] The transport, accumulation and distribution of ¹⁴¹Ce in a simulated paddy were studied. The results show that when entering water, ¹⁴¹Ce will be transferred to soil and rice, and the ¹⁴¹Ce concentration in water will decrease rapidly. The ¹⁴¹Ce concentration in rice is higher than that in soil and water. The dynamic change of the ¹⁴¹Ce concentration in the system can be described by multi-component exponential laws. The ¹⁴¹Ce concentrations in water and soil are decreased monotonously with time, and that in rice is increased to a maximum value then decreased. ¹⁴¹Ce is quickly adsorbed by soil and the adsorption rate is higher. More than 95% of ¹⁴¹Ce is detained in 4 cm of soil surface. The ¹⁴¹Ce concentration in soil presents an individual exponential declining with depth of soil