With the continuous development of information technology, it is an urgent need for the rapid development of China's current wind power industry to transform and improve the operation and management level of large-scale wind farm (WF) with information technology. In order to upload the monitoring data of the WF to the centralized monitoring center safely and reliably, a network with a high safety factor needs to be built, and the center should be able to adjust the operation of the equipment to achieve the best state. In this regard, this paper establishes a network monitoring system for the centralized control center of the WF, which encrypts the collected information during the data collection process, and realizes the security protection of the monitoring data transmission. This paper tests the concurrent performance of the system, and the test results show that the system designed in this paper meets the needs of users. The system in this paper can not only improve the management level of wind power enterprises to optimize the personnel structure and improve the efficiency of WFs, but also realize centralized monitoring and management of equipment in each WF.