There are two objectives of this study, first,it is to examine and compare the accounting quality in pre-and post-implementations IFRS from the viewpoint of investors. Second ,is to identify the differences in the accounting quality between the shariah compliant and non-shariah compliant companies in pre-and post-implementations of IFRS. Using 2169 firm-year observations from firms listed on the Bursa Kuala Lumpur Stock Exchange over the period of 2008 to 2016, the result shows that the implementation of MFRS have reduced the firms’ earnings management. However, this study provides new arguments that Shariah-complaints firms in Malaysia do not necessary have greater incentives to report high-quality reporting based on the investor perspectives. Our evidence thus help to explains the different impact on IFRS adoption on accounting quality in Malaysia and shariah complaint compnaies.