以长江口为例，通过与已建典型围填海工程实际促淤效果的对比分析，以及对长江口近期围填海工程促淤效果预报的合理性分析，研究泥沙数学模型在围填海工程促淤效果预报中的适用性。分析结果表明，所建泥沙数学模型计算的平面淤积形态、断面淤积形态、促淤区淤积量均与实际情况吻合较好，在近期围填海工程中的促淤效果预报较合理，表明该泥沙数学模型适用于长江口围填海工程促淤效果预报。“,”Taking the Yangtze Estuary as an example, applicability of the sediment numerical model to prediction of the effect of the reclamation project on accelerating sediment deposition was examined through comparison of the simulated and measured results and reasonableness analysis of predictions. The results show that the plane deposition feature, cross-sectional deposition feature, and deposition amount calculated with the sediment numerical model agree with measurements, indicating that the sediment numerical model is applicable to prediction of the effect of the reclamation project in the Yangtze Estuary on accelerating sediment deposition.