Taking Wuyuan county of Jiangxi province as the research area, this paper selects Xin′anjiang model, flood forecast model based on soil hydrodynamics, GR3 model and BP model to simulate the 18 flood events since 2017 and then makes a comprehensive comparative analysis in terms of their certainty coefficients and passing rates of the events.The results show that all the four models can provide reasonable results in Wuyuan region with the average certainty coefficient exceeding 0.80, especially BP model is the highest as 0.977. Their qualified rates all exceed 60% and the simulation results are similar between GR3 model and Xin′anjiang model. In order to improve the accuracy of flood forecasting in actual flood forecast, it is advisable to apply multi-models to make comprehensive analysis．