As an important place for knowledge dissemination and information services, the stability of the operation of the computer room in public libraries has a significant impact on improving the quality and efficiency of public library services. This paper takes Nanjing Library as an example to explore in depth the construction plan of the dynamic environment monitoring system for public library computer rooms in the context of the AIGC era. Through a comprehensive analysis of the challenges and practical needs faced by current computer room management, and combined with the latest application achievements of AIGC technology, an innovative design scheme for a dynamic environmental monitoring system that integrates intelligence, automation, and visualization is proposed. This solution not only achieves real-time monitoring of key parameters such as power, environment, and safety in the computer room, but also utilizes advanced intelligent algorithms for deep data analysis and early warning, providing technical support and guarantee for the operation and maintenance management of computer rooms in public libraries.