To practice the “Big Food Concept” and enhance the resilience of the aquatic products prepared dish supply chain, it is necessary to assess its resilience level and identify key bottlenecks scientifically. Based on three dimensions, resistance and recovery, adjustment and adaptation, and innovation and transformation, and integrating the connotations of the “Big Food Concept” (diversification, safety, and green development) with the characteristics of the aquatic products prepared dish supply chain (full-chain integration, collaboration, and technology-driven approaches), an evaluation system consisting of six secondary indicators and fifteen tertiary indicators was constructed. The entropy weight-TOPSIS method was used to evaluate the resilience level of China’s aquatic products prepared dish supply chain from 2018 to 2023, while the Dagum Gini coefficient and obstacle degree model were employed to analyze the regional differences and key constraints. The results show that: The resilience of China’s aquatic products prepared dish supply chain has shown a fluctuating upward trend, yet the three dimensions of resistance and recovery, adjustment and adaptation, and innovation and transformationhas developed unevenly. Regional resilience gaps were significant: intra-regional differences mainly stem from the eastern and central regions, while inter-regional differences are most pronounced between the eastern and western regions and between the northeastand central regions. Diversification capacity constitutes the core bottleneck followed by the levels of full-chain integration and green development. Efforts should be made to strengthen capacity building across all dimensions, promote regional collaboration, and establish a comprehensive supply chain resilience enhancement system to support the high-quality development of the aquatic products prepared dish industry.
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