Abstract: In In the context of the digital energy era, the application of new-generation digital technologies enables digital transformation in the operation and maintenance (O&M) management of transmission lines. This achieves innovation and restructuring of business models, management paradigms, and operational frameworks. This technological advancement enhances transmission line performance in terms of intelligence, safety, reliability, sustainability, and efficiency. Consequently, establishing a differentiated O&M management model tailored for digital transmission lines becomes particularly crucial. This paper investigates ‌intelligent equipment deployment, maintenance strategies, O&M planning, and organizational frameworks‌ to propose a differentiated O&M management approach, providing actionable references for digital transmission line management.