As urbanization accelerates, super-large city faces challenges, including insufficient recognition of the value of ecological spaces and poor connectivity of ecological networks, which hinder high-quality development. High-quality urban development requires sustainable progress across multiple dimensions, including harmonious coexistence between humans and nature, livability and workability, public equity, and effective governance. This study aims to explore a high-quality development pathway for super-large city based on the concept of Park City, addressing ecological bottlenecks and achieving harmonious coexistence between humans and nature, coordinated economic and environmental development, and shared prosperity in society and culture. Focusing on super-large city, this research utilizes a literature review, case analysis, and theoretical construction to examine the intrinsic relationship between the Park City concept and the development of super-large city. It proposes development paths in four dimensions: Ecology (E-PARK), Network (N-PARK), Open (O-PARK), and Innovation (I-PARK), supported by empirical analysis of both domestic and international cases. The findings indicate that constructing Park City can effectively overcome the ecological bottlenecks faced by super-large city. By building a safe and efficient urban ecosystem, creating a systematically connected park network, developing open and accessible green spaces, and promoting the advancement of new-quality productive forces, it injects endogenous momentum into the high-quality development of super-large city. This provides a valuable reference for super-large cities globally in addressing ecological and social challenges, supporting the goals of building a Beautiful China and achieving global sustainable development.