Abstract: Shannxi earthquake network undertakes functions such as earthquake data collection and forwarding, earthquake rapid reporting and cataloging, public information services, and earthquake emergency response. After years of construction and operation, it has developed to a certain level of security and defense capabilities. However, with the continuous development of the public network security industry, problems of different levels in the network structure, security defense, equipment configuration, computer room environment and institutional construction of the Shaanxi earthquake industry network have been discovered. Based on classified security protection evaluation and password application evaluation, we optimized and upgraded Shaanxi earthquake network through reshaping network structure, optimizing equipment configuration, improving institutional mechanisms, upgrading computer room environment etc. It provides a good foundation for the network optimization, technology upgrade, maintenance guarantee, safe operation, and effective management of Shaanxi earthquake network. At the same time, it can provide references for network optimization and upgrading in other industries or units.