The present disclosure relates to the field of mobile communications, and more specifically, to a charging session management method and apparatus. The present disclosure provides a charging session management method, where when user equipment (UE) is in a state of accessing to a network, there is an internet protocol (IP)-Connectivity access network (CAN) bearer between a Gateway and the UE, where the IP-CAN bearer is used to transmit a data flow of the UE, and a charging session exists between the Gateway and a charging system; and the method includes: when a charging session established for the IP-CAN bearer exists between the Gateway and the charging system, terminating, by the Gateway, the charging session if determining that no data flow is transmitted on the IP-CAN bearer within a time threshold; and establishing, a new charging session for the IP-CAN bearer when detecting that a data flow transmission starts to be transmitted on the IP-CAN bearer.