This study aims to analyze the mechanism of corporate governance in compliance level of mandatory disclosure. The identification process of compliance of mandatory disclosure used item checklist issued by BAPEPAM LK number VIII.G.7 2012. Corporate governance mechanisms used in this research are total member of board commisioners, percentage of board commisioner meetings, proprtion of independent commisioners and total member of audit committe. The samples in this reaserch were banking companies listed in Indonesia Stock Exchange (ISX) year 2014-2015. The analysis tool in order to test the hypothesis was multiple regression by using SPSS 21.0. The result of this study indicates that total member of board commisioner has positive effect on compliance level of mandatory disclosure. While the percentage of board commisioner meetings has negative effect on compliance level of mandatory disclosure. Proportion of independent commisioners and total member of audit committe doesn’t any effect on compliance level of mandatory disclosure.