Network information providing system using caller id and method thereof the same

PURPOSE: A system and a method for providing network information by using caller information are provided to decrease the time and the expense required when counselors within a client center processes each popular enmity by searching information related to the popular enmity as well as information on a network by using a client terminal number(CID) as a main key value. CONSTITUTION: A client management unit(110) checks that a client terminal(300) is registered in a CID(Caller Identification Display) service. A caller information acquiring unit(120) acquires caller information including the name of the client and the phone number of terminal if the client terminal(300) is registered in the CID service. A network information search/management unit(130) searches information related to various civil appeals by using the acquired caller information as a main key. A network information supply unit(140) displays the information related to the various appeals on a terminal of a counselor.