Corporate compliance is a creative exploration for the country to optimize the corporate governance.Combining audit with corporate compliance practices can give full play to the positive role of auditing,accelerate the pace of corporate compliance construction,and promote the optimization of corporate governance structure.However,there are many challenges in the application of audit to corporate compliance practice:the deviation between audit and corporate criminal compliance standards,the lack of internal audit resources,and the inability to give full play to the effectiveness of auditing.In view of these problems,this paper proposes three optimization approaches:establishing clear corporate criminal compliance standards through auditing to improve the accuracy of audit evaluation of corporate compliance effectiveness,strengthening diversified investment in internal audit to promote the realization of corporate administrative compliance and private enterprises'independent compliance goals,and improving the effectiveness of audit embedding to promote the substantiation of corporate compliance in the field of outbound investment.