The ship's power system plays a very important role in the entire ship's sailing process. Its stable operation is of great significance to the normal operation of communication equipment, navigation equipment and power equipment. Therefore, the performance requirements of the shipboard equipment on the power station are getting higher and higher. With the rapid development of computer communication technology, power station monitoring systems are becoming more intelligent and real-time. The monitoring network based on PLC industrial control computer has been widely used in the field of industrial automation, which has the characteristics of low cost, stable performance, and simple installation. This paper proposes a power station monitoring system based on Siemens S7-1200PLC, combined with Labview software management platform. The human-machine interaction monitoring function is realized, which has a good application prospect.