A method and system for processing trigger message of a terminal, wherein, the method includes: after receiving trigger message which is transmitted from a machine type communication server to the terminal, a control network element in a core network storing the trigger message of the terminal, and removing the trigger message of the terminal before a validity timer for the trigger message of the terminal expires. The control network element in the present scheme removes the stored trigger message in time before the validity timer for the trigger message of the terminal expires, thus saving the storage resources of the network.