Light energy is widely used in many fields due to its abundant resources and low cost of use. Photovoltaic power generation is an important part of China’s power sources, in order to better develop light energy and use light energy, it is necessary to monitor its power generation system. Aiming at the current remote monitoring mode of photovoltaic power generation in China, a monitoring system of photovoltaic inverter based on cloud service is designed. The bottom layer of the system uses STM32 for centralized processing of information, and the networking chip uses the W5500 hardware protocol stack chip. After experiment, the system can realize real-time remote monitoring of the operating data of the PV inverter.