Abstract: Shipping ships rely on a stable and efficient data transmission system to ensure the safety and efficiency of navigation, while the traditional optical cable monitoring system has the problems of slow response speed and low accuracy. In view of this problem, it is necessary to develop an on-line monitoring and early warning system for optical cables, to deeply mine and analyze the monitoring data, and to provide technical support for the safe operation of shipping vessels. Through the deployment of monitoring stations and light source stations in the Yundong node, the real-time monitoring and fault rapid positioning of the business optical cable from Huai′an to Yundong and from Shiqiao to Yundong are realized. It has many functions such as optical cable network information management, remote real-time, fault automatic alarm and so on, which improves the performance of communication optical cable line obstacle positioning.