At least some embodiments of the disclosure include a method and device for information identification. In the method, a base station acquires a notification message about a start of a traffic information service, wherein the notification message carries a traffic information identifier and a timestamp, the traffic information identifier is a service identifier for indicating traffic information, and the timestamp indicates a time point when the base station sends MSI; and the base station sends the MSI according to the notification message, in which the MSI is indicative of position information and expansion information of a sub-frame where a MTCH corresponding to the traffic information is.