Abstract: The maintenance of power communication optical cable network can use big data technology to collect, process, store, mine and analyze the massive data provided, and then judge the open-loop fault of OTN/IPRAN transmission network. Specifically, it can be realized by relying on an automatic intelligent early warning system of transmission network with ring network structure based on big data analysis. With the help of fault analysis and logical judgment, it can realize intelligent operation and maintenance, reduce operating costs and reduce the number of business interruptions caused by faults.