Abstract: Ultra-thin high-strength strip is known as the “crown jewel of the steel industry” due to its complex rolling process, poor applicability of traditional mechanism models, and strong coupling among multiple control parameters. To address these challenges, a high-precision model and an intelligent technology system integrating thickness, tension, and flatness control have been established, leading to the development of an independently controllable intelligent control system for 20-high precision rolling. This system meets the production demands for ultra-thin dimensions, higher accuracy, and greater stability. It overcomes the control difficulties in thickness, flatness, and high-speed stable rolling of ultra-thin high-strength strip, ensuring high-quality independent supply of key materials such as high-grade stainless steel, electrical steel, and precision alloys in China. The materials have been applied in national defense, aerospace, new energy vehicles, special transformer systems, and other key fields.