Rapid urban rail transit growth presents new challenges for operation and management. Traditional methods limit data and resource utilization. China's "strong transportation country" strategy and smart city development necessitate a shift from traditional to digital thinking for subways, a crucial component of resident travel. Digitalization offers the potential to enhance operational efficiency and quality. This study analyzes the challenges of digital rail operations and presents Kunming Metro Line 4 as a case study. It explores Line 4's digital transformation journey, highlighting its economic benefits. By establishing a cloudbased comprehensive automation and business integration management system, Line 4 achieved synchronized digitalization across the enterprise, enabling practical implementation of digital metro operations. This approach reduced costs, improved efficiency, and offers valuable solutions for urban rail transit digitalization within the industry.

urban rail transit  /  digital transformation  /  cloud platform  /  comprehensive automation system  /  business integration management system  /  Kunming Metro Line 4