This study examines the relationship between audit quality three- variable ratio, liquidity, working capital and return on equity rate we paid. The population of this study listed companies in Tehran Stock Exchange in eight insurance industry, banking, agriculture, petroleum products, textiles, chemicals, pharmaceuticals are. Using knock-out sampling of 56 companies listed in Tehran Stock Exchange during the period 2008 to 2012 were selected and detailed functions are used to test the research hypotheses. The results show that dependency between audit quality and liquidity ratios are very low, but the ratio of shares between audit quality and efficiency of working capital related there is a positive.