Synchronous condensers play an important role in direct current power transmission systems. In order to understand the running condition of synchronous condensers more timely and intuitively, Java Web technology and Python programming are used to realize real-time condition monitoring and accurate fault warning of synchronous condensers. The front-end visualization page displays the running data of the synchronous condensers in the form of scatter graphs, line graphs and reports. The fault judgment of the back-end fault warning program is displayed in the front-end interface in the form of a pop-up box, so that the staff can understand the fault information in time to ensure the safety and stability of synchronous condensers.