The present disclosure provides a routing method and a routing device. The routing method includes: receiving, by an AMF, a first message from an (R)AN, the first message including session-related information and routing information associated with the session-related information; and routing, by the AMF, the session-related information to a relevant SMF in accordance with the routing information. According to the present disclosure, it is able to correctly route the session-related information between the (R)AN and the SMF.