Background: The aging process of China’s population continues to intensify. Changes in family structures have rendered traditional elderly care models unsustainable, posing severe challenges to the national social governance system and public service capabilities. Against this backdrop, the national strategy has successively promoted “Integrated Medical and Elderly Care” and “Smart Eldercare,” aiming to address the aging crisis through technological innovation and resource integration. Dalian, a coastal city in Northeast China characterized by a high degree of aging and relatively well-developed smart city infrastructure, represents a typical yet urgent case for exploring smart healthy aging solutions. Objective: This study aims to systematically analyze the supply structure of smart healthy aging services in Dalian and the current situation of the diversified, multi-level actual demands of the elderly population. It seeks to precisely identify the core issues of the current supply-demand mismatch and, based on this, construct a systematic implementation path and countermeasure framework to achieve precise supply-demand matching. Methods: This research comprehensively utilizes literature review and policy text analysis to analyze the macro background and local practices. Through theoretical deduction and typical case analysis, it defines the demand characteristics of the elderly population and the supply bottlenecks of services. Finally, it employs systems thinking methods for logical reasoning and theoretical model construction. Conclusion: This study is expected to conclude that the supply-demand mismatch in Dalian’s smart healthy aging services is mainly manifested across three dimensions: content, technology, and information. The key to achieving precise matching lies in shifting from a “technology-driven” to a “demand-driven” approach, constructing a multi-level, multi-stakeholder collaborative path model centered on “Precise Identification - Precise Linking - Precise Provision - Precise Governance.” This model can provide theoretical reference and practical action guidelines for Dalian and similar cities to optimize their smart eldercare service systems and enhance service efficacy.