The present invention provides a method and device for processing a QoS parameter in a subscription service combination scenario. The method includes: determining a subscribed APN corresponding to an alias APN, where the alias APN is obtained by a mobility management network element according to an APN in an access request of a UE and according to acquired correspondence between a subscribed APN and an alias APN of the UE; and determining a QoS parameter of the alias APN according to a QoS parameter of the subscribed APN. Embodiments of the present invention can provide a solution for processing a QoS parameter in subscription service combination.