This Study aims to examine the Effect of corporate governance quality and earning quality on cost of equity capital. Corporate Governance Quality is measured by an index called IGOV which is developed from 23 binary question related to corporate governance practices conducted by the firms and divided into 4 aspects: information access, content of public information, board structure, and ownership structure and shareholder's rights. All of the questions can be answered by the publicly available information in Indonesia Capital Market without any means of direct contacts. Corporate governance index resulted in the research able to create a simple picture about corporate governance and can be used to assess its quality only by analyze the annual report and financial statement. Its Earning quality measured by a discretionary accrual model Modified Jones and cost of equity capital of its proxy Capital Asset Pricing Model (CAPM). The samples of this study are 159 manufacturing firms listed on Indonesia Stock Exchange for period 2012-2014. The sampling method used in this study is purposive sampling. Used answer hypothesis using , this studies uses multiple regression as an analysis technique to examine the hypothesis. Result of the empirical evidence shows that corporate governance quality has not influenced on cost of equity, and earning quality has not either on cost of equity.