The present invention relates to a method and apparatus for controlling an audio/video bridging (AVB) stream in an in-vehicle Ethernet communication network. A method for controlling an audio/video bridging (AVB) stream in an in-vehicle Ethernet communication network may include configuring an AVB frame using audio/video (AV) data received from an upper application layer, acquiring a stream subtype identifier (ID) corresponding to the configured AVB frame, identifying a host having generated the AVB frame, identifying a domain including the identified host, identifying a stream class of the AVB frame, generating an AVB stream ID based on the acquired stream subtype ID, the identified host, the identified domain and the identified stream class, and transmitting the generated AVB stream ID in the AVB frame to a sub layer.