Abstract: Ultra-thin stainless steel precision strip serves as a key foundational material for applications in flexible displays, flexible photovoltaics, highend electronic components, aerospace, and related fields. However, its production has long been hindered by challenges such as unstable thickness control, poor strip shape, susceptibility to surface ridging, and skidding caused by residual rolling oil. Based on the industrial production practice of the precision 20-high rolling mill at Ningbo Baoxin, this study systematically addresses these core technical difficulties through research on rolling schedule optimization, improved thickness control strategies, roll system configuration development, design of strip shape target curves, and control of surface residual oil. An integrated technical solution has been established, encompassing high precision thickness control, shape regulation, ridging suppression, and skidding prevention. This approach has enabled the stable mass production of 0.03-0.05 mm wide ultra-thin strips and pushed the minimum achievable thickness down to 0.02 mm. The results break through the technical barriers in producing wide ultra-thin stainless steel strips and offer practical guidance for process optimization and product upgrading on similar production lines.