A method and system for providing a picture as caller ID (Identification). In a mobile communication system having a first mobile station (MS) on a calling side, a second MS on a called side, and a base station (BS) and an MSC that enable communication between the first and second MSs, the MSC has a storage component that stores picture information of each MS. The MSC receives a SETUP message from the first MS via the BS during a call attempt by the first MS, checks whether the picture information of the first MS is stored in the storage component in response to the SETUP message, and transmits the picture information of the first MS to the second MS so that the picture information of the first MS can be displayed as the caller ID on a display of the second MS, if the picture information of the first MS is stored in the storage component of the MSC.