In order to manage and control the existing time transmission system and ensure the flexibility, completeness, safety and high availability of the system, this paper designs a complete set of optical fiber time transmission monitoring system. A centralized structure is adopted in the system structure. In terms of functions, it includes five parts: fault management, performance management, configuration management, safety management, and data storage management. The specific implementation methods of each function are explained in detail. The system centralizes management and decentralizes control of each time transmission node at the monitoring node, and stores the data in the database. Finally, a monitoring system is tested on the point-to-point time transmission system based on BTDM-SFSW. Experiments show that the system can monitor the system in real time and deal with faults to a certain extent, which has high reliability.