A link interruption processing method in a relay network and device are provided, and the link interruption processing method in a relay network is applied to a first relay node on a wireless backhaul path of a first terminal, and includes: releasing, by the first relay node after detecting that an upper-level radio link on the wireless backhaul path fails, a connection between the first relay node and a second relay node; where the second relay node is a lower-level relay node of the first relay node on the wireless backhaul path.