Provided in the present disclosure are a method and device for processing a Gx session exception. The method includes: when a PGW detects a Gx session exception, activating a preset timer, wherein the Gx session is borne on a link between the PGW and a policy and charging rules function (PCRF) unit; and when the timer has expired, if the link is determined to be normal, resuming a data traffic service for the Gx session corresponding to user equipment. The technical solution realizes the automatic resumption of the data traffic service when a timer is expired and thus addresses the problem in the art in which the data traffic service cannot be automatically resumed after a Gx session exception.