The invention provides a real-time monitoring method and system for high-temperature aging of Ethernet exchanger, the method comprising the following steps: dividing multiple monitored equipments into multiple groups; the monitored equipments in every group are connected circularly; multiple groups are connected to a monitoring controller by star shape and the monitoring controller is connected to a monitoring host; the monitoring controller configures address for multiple monitored equipment under the control of monitoring host; the monitoring host establishes communication connection with multiple monitored equipments through the address, monitoring the high-temperature aging operation condition of multiple monitored equipments in real time. By adopting the method combining circular connection and star-shaped connection, the invention resolves the problem by adopting star-shaped connection and chain connection in high-temperature aging test for multiple equipments in the prior art and improves the reliability of monitoring channel.