The argument that points out that there is problem with the administration for existing banking industry oriented supervision system has emerged since bankruptcy of Northern Rock Bank at Britain and subprime mortgage loan crisis at the U.S in 2007. G20 approved 'ten principles for enhancing OECD financial consumer protection' in November 2011. Necessity of establishing Financial Consumer Protection Board as alternative for moral hazard and collapse of existing single financial supervising system has emerged since Kiko crisis in 2008, and Korea has been in progress of legalization since chain bankruptcies of large-scale saving banks to Busan saving bank crisis in 2011; and central bank has constantly asserted necessity of independent supervisory authority for liquidity monitoring of separated financial institution. The direction is zipped into strengthening macroscopic soundness supervision, supervisory against financial group that has promoted enlargement and complexification, regulation for financial market, protective device for financial consumer, and extending cleanup system of insolvent financial institution. The regulation systems in order to vitalize and to establish soundness of the capital market according to the current capital market law are not a little. However, as matter of fact, these regulation and remedy should go with practical and correct exercise of a right of the Financial Services Commission and the Financial Supervisory Service that have exclusive authority supervisory and observation all over the financial market. The happenings relating to financial supervisory so far are mostly that institution having high specialty abused its authority or cheated. Besides, these were many damages led by so-called bureaucratic finance, which the government was involved in. Therefore, separation of financial supervisory is suggested in order to prevent abusing its exclusive supervisory authority and bureaucratic finance. Even though there is advantages of which supervisory institutions mutually control and operate in competing system if financial supervisory authority divided, financial consumer inevitably has to accept the inconvenience, as a result, increased cost would be imposed to the public; and increase of human resource and prepared time for supervisory commercial bank if there are more supervisory institutions. Therefore, alternative law for protecting financial consumer and supervisory duplication is necessary. So, this thesis suggests retaining integrated financial supervisory system like the current and establishing Financial Consumer Protection Bureau for post-protective authority. In other words, the Financial Supervisory Service become in charge of general financial supervisory and shares information primarily as it supplies materials requested by the Bank of Korea and Financial Consumer Protection Bureau. Also, the Bank of Korea and the Financial Consumer Protection Bureau suggests law to request complement material unless he Financial Supervisory Service is not able to cooperate. Inconvenience for financial consumer due to dual supervisory and ambiguousness of responsibility issue due to division of supervisory authority rather bother financial consumer's protection, and financial consumer protection is not made properly because lack of supervisory system. The most important thing for reorganizing financial supervisory system is not to authorize irresponsible person and to exclude the irresponsible one's interruption.