Generic route encapsulation tunnel message forwarding method and system

The invention discloses a generic route encapsulation (GRE) tunnel message forwarding method and a system. The method comprises that first intranet equipment sends multiple small messages to second intranet equipment; first firewall equipment receives the multiple small messages sent by the first intranet equipment, integrates the multiple small messages according to the size of the small messages, and encapsulates a GRE message; the first firewall equipment sends the GRE message to second firewall equipment through a GRE tunnel which passes through a public network; the second firewall equipment receives the GRE message, and then partitions the GRE message to obtain multiple small messages before encapsulation; and the second firewall equipment independently processes the obtained multiple small messages and then forwards processed obtained multiple small messages to the corresponding second intranet equipment. According to the method and the system, the forwarding speed of the GRE tunnel when a lot of small messages need to be forwarded is improved, and network pressure is reduced.