Session link control method and apparatus

The invention discloses a session link control method. The method comprises the following steps that: a data transmission rate of a transmission link that is currently used by a mobile terminal is monitored; and when the data transmission rate of the transmission link that is currently used by the mobile terminal is monitored to be lower than a preset rate threshold value, a new transmission link is established for the mobile terminal and the mobile terminal is controlled to be switched from the current transmission link to the new transmission link. In addition, a session link control apparatus is also disclosed. According to the technical scheme, congested transmission link usage by a session service by a mobile terminal can be avoided, thereby ensuring the session service transmission reliability and smoothness.