Objective: This study explored the intricate relationships among the International Dysphagia Diet Standardisation Initiative (IDDSI) framework, swallowing function, and nutritional status, grounded in the Occupational Therapy Practice Framework (OTPF). This study underscores the need for personalized nutritional management and integrated approaches in patient care by analyzing the clinical application of the IDDSI framework, its correlation with dysphagia risk and nutritional status, and the influence of personal and environmental factors. Methods: This literature review adhered to the PRISMA guidelines and employed the PICO strategy to search the following databases: PubMed, Embase, the Korean Studies Information Service System (KISS), and the Research Information Sharing Service (RISS). The search terms included “dysphagia,” “swallowing disorder,” “deglutition,” “International Dysphagia Diet Standardisation Initiative,” “International Dysphagia Diet Standardization Initiative,” and “IDDSI.” Studies published up to December 2023 that had applied the IDDSI framework to patients requiring modified diets and analyzed variables related to both dysphagia risk and nutritional status were included. Following screening and quality assessment using JBI checklists, seven studies were ultimately selected. Results: The findings reveal that the IDDSI framework transcends simple dietary texture classification, evolving into a tailored management strategy that reflects individual clinical characteristics and care environments. The essential components for this evolution include systematic staff training programs, multidisciplinary team collaboration, financial support, and cultural localization strategies. The application of the IDDSI framework ensures safe eating, and enhances the nutritional status and quality of life of patients. Conclusion Future studies should aim to evaluate the effectiveness of applying the IDDSI framework across diverse cultural contexts and empirically analyze policy and phased implementation strategies that can overcome financial and environmental constraints.