Levels of indebtedness and working to reach them, and adjusting these ratios according to The two abstracts Decisions regarding the formulation of the financial structure affect the company's returns, and thus its financial sustainability. The integration between the financing and investment decisions would play a major role in promoting the survival and growth of the company. The flexible financial structure increases the company's ability to exploit profitable investment opportunities. The current study aims to measure and analyze. The impact of the flexible (dynamic) financial structure on financial sustainability, and the study community was represented by industrial companies listed on the Iraqi Stock Exchange, as a sample of these companies was taken, amounting to (4) industrial companies listed the Iraqi Stock Exchange, and data for the period (2017-2021) were taken ) In the analysis, a set of statistical methods were used to test the effect between the study variables, including the multiple regression coefficients and (t) test. it's done. Reaching a set of conclusions, including that companies that are working on the formulation of a dynamic financial structure, are able to achieve financial sustainability. Based on the conclusions, a set of recommendations was built, including the necessity for industrial companies, the study sample, to formulate a dynamic financial structure, through the development of plans that include defining targeted to the nature of work and surrounding conditions, as well as identifying investment opportunities and working on Make optimal use of it.