The invention discloses a method for managing Ethernet topology, comprising the following steps of: setting an Ethernet topology managing domain, wherein each node in the managing domain transmits a protocol frame comprising self mark information and state information according to a transmitting strategy; and determining and storing the Ethernet topology relation of the managing domain according to the mark information and state information of the nodes in the protocol frame by a node receiving the protocol frame. The invention discloses a device for managing Ethernet topology, comprising a setting unit, a transmitting unit, a receiving unit, a determining unit and a storing unit, wherein the setting unit is used for setting the Ethernet topology managing domain; the transmitting unit is used for transmitting the protocol frame comprising the self mark information and the state information according to the transmitting strategy; the receiving unit is used for receiving the protocol frame; the determining unit is used for determining the Ethernet topology relation of the managing domain according to the mark information and state information of the nodes in the protocol frame, and the storing unit is used for storing the Ethernet topology relation of the determined managing domain of the determining unit. By the invention, all the nodes in the managing domain can accurately know the topology relation of the managing domain in time.