The invention discloses a routing determination method and a routing device. The method comprises the following steps: based on a preset link detection mode, the routing device determines that a broadcast link where the device is has oscillation; when a present assigned intermediate system at the broadcast link is a self distant end neighbor device, a local assigned intermediate system is selected from the device and a self local neighbor device; based on the selected local assigned intermediate system, a self latest LSP (link-state packet) is determined; according to the self latest LSP, and a received latest LSP of the neighbor device of the device, routing calculation is carried out, and a latest routing is determined. When the broadcast link has oscillation, one end of the broadcast link has a plurality of routing devices, and the assigned intermediate system is not included, by employing a scheme provided by an embodiment of the invention, the routing calculation is carried out, and routing convergence can be realized.