Abstract: With the intelligent and automatic development of distribution services, the more strict requirements are put forward for transmission delay, bandwidth, and reliability of distribution service status monitoring system. The software-defined networking (SDN) is innovatively applied to distribution service status monitoring system due to its flexible configuration and programmable technical advantages, and a SDN-based distribution service status monitoring system architecture is designed, which can realize the flexible network flow control and intelligent network management. In addition, the key technologies of SDN-based distribution network are analyzed and studied to further meet the requirements of distribution service status monitoring.