The global phenomenon of population aging is advancing at an unprecedented pace, particularly in China, where the accelerating aging process poses substantial challenges to the existing pension security system. The issue of elderly care has emerged as a critical topic in the realms of society, economy, and politics, impacting national sustainability and social stability. The challenges brought about by an aging society extend beyond the pressures of pension payments and insufficient elderly care services, encompassing risks related to funding sources and management, as well as concerns over the fairness of the security system. In the face of these challenges, there is an urgent need to optimize pension policies, advance pension system reforms, enhance the elderly care service system, and strengthen the coordination between social and medical security to construct a more equitable and sustainable pension security framework. Measures must be collaboratively advanced through top-level institutional design, policy execution efficiency, and societal involvement to provide robust support in addressing the challenges of aging. This paper will delve into the impact of population aging on the pension security system, analyze the current state and shortcomings of policies, and propose strategies to enhance the system's resilience, offering insights and recommendations for strengthening the pension security framework.