A method for transmitting a V2I message of a V2X communication apparatus is disclosed. The method for transmitting a V2I message may include generating a V2I message for providing V2I service which is a service between a vehicle and an infra, the V2I message includes a first container including information commonly used for the V2I service and a second container including information used for a specific V2I service; network/transport layer-processing the V2I message; and generating a signal frame by physical layer-processing the V2I message. The first container may include message ID information representing an identifier of the V2I message.