Abstract: As a unique micro-geomorphic unit of coastal wetlands, tidal creeks play a fundamental role in mediating vegetation dynamics and ecosystem functional evolution in coastal salt marshes. In this study, taking the Liaohe River Estuary Wetland as the research area and based on multi-temporal Sentinel-2 and Landsat 8 remote sensing imagery interpreted with field surveys and GPS validation, we systematically investigated the developmental characteristics of tidal creeks and the spatiotemporal patterns of Suaeda salsa vegetation change during the period from 2015 to 2023. Seven morphological parameters of tidal creeks and six landscape pattern indices of vegetation were quantified, and a landscape comprehensive index was derived through principal component analysis to characterize vegetation status. Pearson correlation and hierarchical partitioning analyses were further employed to identify the key regulatory parameters. The results revealed that tidal creek development was markedly spatially heterogeneous, with distinct morphological differences among the western bank, eastern bank, and central mudflat areas. Notably, the three network connectivity indicators, network circularity (α), node connectivity rate (β), and network connectivity (γ), were significantly and positively correlated with the vegetation landscape composite index, with their combined explanatory power reaching 56%. Among them, β contributed over 20% independently, while α and γ each accounted for approximately 15%, indicating that network connectivity is a critical factor driving vegetation recovery. Through regression and peak analyses, the suitable threshold intervals for effective S. salsa restoration were determined as 0.30-0.38 for α, ≥1.56 for β, and 0.54-0.59 for γ. These thresholds reflect the hydrodynamic conditions necessary for alleviating soil salinity stress, enhancing nutrient delivery, and facilitating seed dispersal and colonization. Optimizing tidal creek network connectivity can effectively promote S. salsa restoration, providing a robust scientific basis and practical guidance for the ecological restoration and sustainable management of coastal wetlands in similar estuarine environments.