A method for performing quality of service control on a user equipment, comprising: after establishing an Internet Key Exchange version 2 [IKEv2] security association between the user equipment and a packet data network gateway to establish an Internet Protocol Security [IPSec] tunnel, the packet data network gateway sending IPSec tunnel information to a Policy and Charging Rules Function [PCRF], then the PCRF sending the IPSec tunnel information to Broadband Policy Control Function [BPCF], and the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information; wherein, the IPSec tunnel information comprises a local IP address of the user equipment; the step of the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information comprises: the BPCF executing the service quality control procedure on part or all of services using the local IP address in the user equipment according to the local IP address characterized in that: if a packet sent by the user equipment is translated by NAT [Network Address Translation] when passing through a Broadband Forum access system, the IPSec tunnel information further comprises a User Datagram Protocol source port number of the packet sent by the user equipment which has been translated by the NAT; if the packet data network gateway receives a binding update message containing an original IP address of the user equipment, the IPSec tunnel information further comprises the original IP address of the user equipment; and the step of the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information further comprises: the BPCF performing quality of service control on all or part of services using the original IP address. after establishing an Internet Key Exchange version 2 [IKEv2] security association between the user equipment and a packet data network gateway to establish an Internet Protocol Security [IPSec] tunnel, the packet data network gateway sending IPSec tunnel information to a Policy and Charging Rules Function [PCRF], then the PCRF sending the IPSec tunnel information to Broadband Policy Control Function [BPCF], and the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information; wherein, the IPSec tunnel information comprises a local IP address of the user equipment; the step of the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information comprises: the BPCF executing the service quality control procedure on part or all of services using the local IP address in the user equipment according to the local IP address characterized in that: if a packet sent by the user equipment is translated by NAT [Network Address Translation] when passing through a Broadband Forum access system, the IPSec tunnel information further comprises a User Datagram Protocol source port number of the packet sent by the user equipment which has been translated by the NAT; if the packet data network gateway receives a binding update message containing an original IP address of the user equipment, the IPSec tunnel information further comprises the original IP address of the user equipment; and the step of the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information further comprises: the BPCF performing quality of service control on all or part of services using the original IP address. if a packet sent by the user equipment is translated by NAT [Network Address Translation] when passing through a Broadband Forum access system, the IPSec tunnel information further comprises a User Datagram Protocol source port number of the packet sent by the user equipment which has been translated by the NAT; if the packet data network gateway receives a binding update message containing an original IP address of the user equipment, the IPSec tunnel information further comprises the original IP address of the user equipment; and the step of the BPCF executing a service quality control procedure on services of the user equipment according to the received IPSec tunnel information further comprises: the BPCF performing quality of service control on all or part of services using the original IP address.