A bearer control method, applied to a network architecture supporting multiple access technologies, comprising: sending, by a policy and charging rule function by using a mobility management entity, quality of service, QoS, information to an access network access node; receiving, by the access network access node, the QoS information from the policy and charging rule function; identifying, by the access network access node, a service data flow of a user equipment, UE; matching, by the access network access node according to the QoS information, the service data flow of the UE with an air interface bearer between the UE and the access network access node; performing, by the access network access node, radio resource control, RRC, connection reconfiguration between the UE and the access network access node according to the QoS information using a reconfiguration message, wherein the performing, by the access network access node, radio resource control protocol, RRC, connection reconfiguration according to the QoS information comprises: - sending, by the access network access node, an RRC connection reconfiguration message to the UE; and - receiving, by the access network access node, an RRC connection reconfiguration success response from the UE; wherein the reconfiguration message includes a mapping relationship between the service data flow of the UE and the air interface bearer, and an identifier of an air interface resource, and the identifier is used to indicate the air interface resource used by the UE to transmit, on the air interface bearer, the service data flow, and wherein the air interface resource is allocated by the access network access node to the air interface bearer; and transmitting, by the access network access node, downlink data of the service data flow of the UE on the air interface bearer according to the received QoS information, and transmitting, by the access network access node, uplink data of the service data flow by using a transmission tunnel between the access network access node and a core network gateway. sending, by a policy and charging rule function by using a mobility management entity, quality of service, QoS, information to an access network access node; receiving, by the access network access node, the QoS information from the policy and charging rule function; identifying, by the access network access node, a service data flow of a user equipment, UE; matching, by the access network access node according to the QoS information, the service data flow of the UE with an air interface bearer between the UE and the access network access node; performing, by the access network access node, radio resource control, RRC, connection reconfiguration between the UE and the access network access node according to the QoS information using a reconfiguration message, wherein the performing, by the access network access node, radio resource control protocol, RRC, connection reconfiguration according to the QoS information comprises: - sending, by the access network access node, an RRC connection reconfiguration message to the UE; and - receiving, by the access network access node, an RRC connection reconfiguration success response from the UE; wherein the reconfiguration message includes a mapping relationship between the service data flow of the UE and the air interface bearer, and an identifier of an air interface resource, and the identifier is used to indicate the air interface resource used by the UE to transmit, on the air interface bearer, the service data flow, and wherein the air interface resource is allocated by the access network access node to the air interface bearer; and - sending, by the access network access node, an RRC connection reconfiguration message to the UE; and - receiving, by the access network access node, an RRC connection reconfiguration success response from the UE; wherein the reconfiguration message includes a mapping relationship between the service data flow of the UE and the air interface bearer, and an identifier of an air interface resource, and the identifier is used to indicate the air interface resource used by the UE to transmit, on the air interface bearer, the service data flow, and wherein the air interface resource is allocated by the access network access node to the air interface bearer; and transmitting, by the access network access node, downlink data of the service data flow of the UE on the air interface bearer according to the received QoS information, and transmitting, by the access network access node, uplink data of the service data flow by using a transmission tunnel between the access network access node and a core network gateway.