Abstract: With the growth of Internet users' demand and the promotion of enterprise globalization, the CDN network continues to expand, The handling of network failures has become increasingly complex. Network operation and maintenance (especially in the field of CDN) is facing unprecedented challenges. Through the discussion of the CCF YOCSEF Changsha Technical Forum, this article explores the background and current situation of big models in network operation and maintenance, the risks brought by network failures, and the potential of big language models in the field of network operation and maintenance, aiming to reveal the key elements of marketization and put forward strategies and suggestions.