The purpose of this study is to provide empirical evidence about the effect of IFRS adoption and investor protection on earnings persistence. Based on prior studies, there are some problems that existed in the accounting practices in emerging markets such as less an accountant who have good qualifications, incomplete accounting information or inaccuracy of time in preparing financial statements, the lack of accounting data that are used for internal management incentives, the lack of legislation, auditing standards and procedure of accounting standards and this issues will can affect the quality of accounting information that reported in financial statements. So this view initiate to investigate extensively about the effect of institutional factors on earnigs persistence.This study uses panel data with 12.903 firm-year observations in emerging markets evidence from 2011 to 2013. To measure IFRS adoption uses score based on three distinctions of the type from IFRS adoption in respective countries. And then for dependent variable in this study is earnings persistence. While for the investor protection uses strength of investor protection index proxy from World Bank.The findings imply that in the context of emerging markets, IFRS adoption is not associated with future earnings persistence. While a stronger investor protection in the country significantly correlated with greater earnings persistence.