The invention discloses a message forwarding method and system in RPR network. Each node of the RPR network is a stacked device consisting of a first member device and a second member device, wherein the method comprises the following steps: generating, by the first member device, a first broadcasting list containing non-local broadcasting identifiers; generating, by the second member device, a second broadcasting list containing local broadcasting identifier; identifying, by the first member device, an Ethernet message needs to be broadcasted; sending, by the first member device, the Ethernet message needs to be broadcasted to the second member device based on the first broadcasting list; packaging, by the second member device, the received Ethernet message needs to be broadcasted into a RPR broadcasting message based on the second broadcasting list, and forwarding the RPR broadcasting message via the outlet interface of the second broadcasting list.