MVB bus data interception system with Ethernet interface

The utility model provides an MVB bus data interception system with an Ethernet interface. The system comprises an interface circuit connected with an MVB bus; a control circuit which is connected with the interface circuit and performs Manchester decoding on the received bus data; and the Ethernet interface which is connected with the control circuit and transmits the data of the control circuit to a host computer. The MVB bus data interception system with the Ethernet interface can obtain MVB data of a train and stores the data as data files in real time, forms an running state database of the train, and provides data support for debugging, fault diagnosis and maintenance.