This study conducted in-depth semi-structured interviews with 16 groups of community-dwelling hypertensive patients with different demographic characteristics and their caregivers or cohabitants. This study aimed to identify the influencing factors of dietary choices among community - dwelling hypertensive patients， and to provide an in-depth analysis of the decision-making process of their dietary selection，thereby providing a basis for guiding and improving their dietary behaviors. Following the interpretative phenomenological analysis principles，this study identified four core categories: self-efficacy，family dynamics，social support，and sociocultural-economic factors. The results indicated that under the combined influence of multiple factors，such as health literacy and physical and mental status，patients’preference for food attributes was the most direct and critical influencing factor in their dietary selection process. In contrast，professional guidance and inter - generational support provided external intervention on patients’dietary choices at the community and family levels，respectively. Based on the influencing mechanisms，this study identified effective dietary intervention strategies for dietary choices，offering a reference for chronic disease management in community settings.