A method for implementing routing aggregation, comprising: sending a message to a Dynamic Host Configuration Protocol version 6, DHCPv6, relay agent, such that the DHCPv6 relay agent generates an aggregation routing of requesting router prefix routings according to the message; wherein the message comprises information about a prefix pool which assigns address prefixes to requesting routers which access the DHCPv6 relay agent or aggregation routing destination address information generated according to the information about the prefix pool, characterized in that: the message is a relay reply message, and before the sending a message to a DHCPv6 relay agent, the method further comprising: receiving a relay forwarding message sent by a DHCPv6 relay agent, wherein the relay forwarding message comprises a requesting agent notification option; and the sending a message to a DHCPv6 relay agent, comprising: sending the information about the prefix pool to the DHCPv6 relay agent through a relay reply message when it is checked that the relay forwarding message comprises the requesting agent notification option. sending a message to a Dynamic Host Configuration Protocol version 6, DHCPv6, relay agent, such that the DHCPv6 relay agent generates an aggregation routing of requesting router prefix routings according to the message; wherein the message comprises information about a prefix pool which assigns address prefixes to requesting routers which access the DHCPv6 relay agent or aggregation routing destination address information generated according to the information about the prefix pool, characterized in that: the message is a relay reply message, and before the sending a message to a DHCPv6 relay agent, the method further comprising: receiving a relay forwarding message sent by a DHCPv6 relay agent, wherein the relay forwarding message comprises a requesting agent notification option; and the sending a message to a DHCPv6 relay agent, comprising: sending the information about the prefix pool to the DHCPv6 relay agent through a relay reply message when it is checked that the relay forwarding message comprises the requesting agent notification option. the message is a relay reply message, and before the sending a message to a DHCPv6 relay agent, the method further comprising: receiving a relay forwarding message sent by a DHCPv6 relay agent, wherein the relay forwarding message comprises a requesting agent notification option; and the sending a message to a DHCPv6 relay agent, comprising: sending the information about the prefix pool to the DHCPv6 relay agent through a relay reply message when it is checked that the relay forwarding message comprises the requesting agent notification option. receiving a relay forwarding message sent by a DHCPv6 relay agent, wherein the relay forwarding message comprises a requesting agent notification option; and the sending a message to a DHCPv6 relay agent, comprising: sending the information about the prefix pool to the DHCPv6 relay agent through a relay reply message when it is checked that the relay forwarding message comprises the requesting agent notification option. sending the information about the prefix pool to the DHCPv6 relay agent through a relay reply message when it is checked that the relay forwarding message comprises the requesting agent notification option.