An embodiment of the present invention discloses a network connection re-establishment method, including: detecting whether gateway resetting occurs, and if it is detected that gateway resetting occurs, sending a network connection re-establishment trigger message to an access node when a downlink packet sent by a packet data network is received, where the access node re-establishes, according to a type of the gateway resetting, a network connection corresponding to the downlink packet, and the type of the gateway resetting is resetting of a data gateway or resetting of a serving gateway. The present invention can be used to quickly re-establish a network connection, and can be applied to a situation in which a serving gateway and a data gateway are integrated.