According to the principle that different financing structure can impact corporate financing costs and business decisions,which affect the company's cash flow,the impact of financing structure on the operating performance in energy saving and environment protection industry was studied by using empirical methods of factor analysis and multiple linear regression.The conclusion is that internal financing and equity financing of energy saving and environmental protection industry generate a positive impact on operating performance,debt financing has a negative impact on operating performance.According to the results of this conclusion,enterprises should increase internal financing and equity financing,and decrease debt financing to enhance business performance.