Abstract:Based on 364 restatement samples and 4904 non restatement samples from 2008 to 2011 of A share stock market in China, an empirical research shows that board meeting frequency, executive compensation and whether being audited by one of Four Big Accounting Firms significantly influence the corporate governance efficiency. G established from factoring analysis is U curve related with financial restatements, proving that there exists an optimal corporate governance efficiency point. A company’s development period and agency cost also influence the efficiency of corporate governance.