In order to study the change of water level of rice farmland under controlled irrigation and drainage mode, the parameters of DRAINMOD model and HYDRUS-1D model were determined based on the planting test data of rice pit in 2017, and the correlation coefficient, average deviation and efficiency coefficient were used as the reference evaluation criteria. Comparing the simulated values of farmland water level with the measured values in 2018, the reliability of two models to simulate farmland water level was analyzed. The results show that both the simulation results of DRAINMOD model and HYDRUS-1D model can reflect the actual changes of farmland water level. Correlation coefficients between simulated and measured values are 0. 778 and 0. 849, the average deviations are 2. 051 cm and 1. 809 cm, and the Nash efficiency coefficients are 0. 509 and 0. 360, respectively. There is no significant difference between the simulation results of two models. Both DRAINMOD model and HYDRUS-1D model can be used to simulate the change of water level in rice field under controlled irrigation and drainage, and this conclusion provides a convenient and feasible method for the study of water transport in rice field.