Abstract: After more than ten years’ development, Shanghai Library system has become the largest central-and-branch library system in China.This paper comprehensively analyzes the technical service difficulties in the construction of the system, and puts forward the countermeasures of building knowledge management and service platform, introducing in social forces, focusing on daily maintenance, improving the service level of one card system, and increasing the standardization of technical services, so as to provide useful reference for the construction of central and branch libraries in other areas of China.

Key words: Public library, Central and branch library, Technical services, Countermeasures