Landing site assessment is a critical aspect of maritime rescue operations, disaster emergency response, equipment and personnel transport, and material delivery, influenced by a combination of factors such as coastal terrain, seabed composition, and geographical and geological conditions. Current evaluation methods typically rely on a limited range of influencing factors (such as coastline topography, seabed composition, and vegetation cover) and qualitative, rule-based approaches, which suffer from a lack of comprehensive factors and an over-reliance on experiential data, making them inadequate for meeting the demands of fast, safe, flexible, and low-cost landings. To address these issues, this paper proposes an entropy-weighted TOPSIS model that comprehensively takes into account hydrological, coastal geographic, and geological attributes to evaluate landing sites along the coastline. First, a landing site evaluation index system was established, covering four primary categories: maritime factors, transportation factors, geographic factors, and geological elements, along with their detailed sub-indices. Then, the entropy-weighting method was employed to assign weights to each factor, and a TOPSIS model was constructed to calculate the relative closeness of each landing site, assessing its suitability for landing. Finally, by incorporating the width requirements for conventional landing craft, the assessment results were filtered to produce the final landing site evaluation map. A case study was conducted on the XX coastline, and the results demonstrated that hydrological, coastal geographic, and geological attributes are critical factors influencing landing site assessments. The entropy-weighted TOPSIS model identified six landing areas that are safe, flexible, and cost-effective.