Based on the existing problems in the process of flood control in the river and flood detention areas, this paper conducts a systematic analysis of the advantages, disadvantages and applicability of the one-dimensional model, the coupling model and the two-dimensional model of the numerical simulation of the flood control in the flood control process, and reveals the future development of numerical simulation of flood control. The results can provide important basis for flood risk mapping and flood warning and forecasting, which is of great significance to the decision of flood control and disaster reduction.