A method for controlling access to a machine-type communication (MTC) device having a dual priority application in a mobile communication network. More particularly, a signaling method executed in a terminal configured to perform non-access stratum (NAS) signaling including low access priority indication in a mobile communication network and configured such that the low access priority is negligible. The signaling method may include performing one of a procedure of mobility management and a session management including the low access priority, receiving a back-off timer due to one of mobility management congestion control and session management congestion control and operating the back-off timer, and performing one of the mobility management procedure and the session management procedure without including the low access priority.