Disclosed are a financial security system and a financial security securing method. The financial security system includes: an internet financial server connected to a user computer by an internet network, requesting speaker authentication when financial dealing is requested by a user, and approving the financial dealing; a call server dialing a preset number preset according to the request of the internet financial server, requesting phonation from a user requested the financial dealing while the call is connected, receiving a user′s voice, and transmitting the result of the speaker authentication to the internet financial server; and a speaker authentication server check whether the user′s voice received from the call server is a previously registered voice or not and transmitting a result of the speaker authentication generated based on the result of checking. The purpose of the present invention is to provide the financial security system which security is tightened up and the financial security securing method.;COPYRIGHT KIPO 2016
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