Abstract: The status and problems of the data acquisition and supervisory system for medium-low voltage distribution network are presented.By referring to the actual needs of promoting medium-low voltage distribution network operation,a structure design scheme for centralized data acquisition and supervisory system for medium-low voltage distribution networks is put forward.According to the predetermined design philosophy,5 functions are to be implemented,that is,intelligent data acquisition,communication and transmission,real-time data processing,power usage information management and monitoring,intelligent distribution area management and monitoring.A safety system design and interfacing with other existing systems are provided.