There are problems such as heavy workload, low efficiency and easy to make mistakes in the static network address of the train MCU by manual configuration, so, a method for intelligent configuration of MCU network address based on network address specification and two layer network management switches LLDP through train information maintenance Ethernet was provided. The configuration mechanism of the method was studied and the system scheme of the method was described. The test results showed that the train MCU static network address configuration method was safe, reliable, high efficiency and low cost, loading appraisals well, and accordance with the requirements of the system design.