The Objective of this research is to analyze factor influencing the capital structure of minings firms which are listed on Indonesia Stock Exchange period of 2009 - 2013. The method used in this research is purposive sampling and analyzing procedure is using panel data (fixed effect model) with fifteen companies are used for sampling. There are six variables it influences the capital structure i.e. firm size, asset structure, profitability, sales growth, asset growth, and liquidity. The results of this research indicate that Profitability (0.0303), Sales Growth (0.0059), Asset Growth (0.0001), and liquidity (0.0241) influence to capital structure. However, for Company Size (0.2336) and Asset Structure (0.5729) there are no effect on their capital structure. Then the results of the relationship are compared to Modigliani Miller’s theory, Pecking order theory, The tradeoff theory, and Asymmetric Information Theory.