Conversion gateway and conversion method of vehicle communication network data

The invention provides a conversion gateway and conversion method of vehicle communication network data. The vehicle communication network data comprises first communication protocol data and second communication protocol data of a data link layer. The conversion method of the vehicle communication network data comprises the following steps of: decoding the received first communication protocol data, and writing the first communication protocol data into a data buffer area; and reading the decoded data from the data buffer area, coding the data according to the requirements of the second communication protocol, and then, sending the data. By decoding one kind of communication protocol data and then coding the communication protocol data into another kind of communication protocol data, the invention can realize interconnection and intercommunication among network elements with different communication protocols.