The public debt is the difference between the classical economic schools and the classical Keynesian schools and each public debt looks at a different perspective in terms of the impact of public debt on the economic and social balance, and the effects of internal public debt on external public debt on the general economy in terms of transfer of economic surplus between the sons of one generation or Between the state and another state, and internal public debt of the economic variables affecting the movement of the cash market through the impact of internal public debt on interest rates and cash reserves that constitute the basis of cash, so the study focused on studying the impact of public debt on The monetary basis is due to the deficit of the general budget, which is the basis for the existence of internal public debt and its economic effects. The internal public debt represents the increase in public expenditure on public revenue. This increase in public expenditure necessarily reflects changes in the monetary basis due to the effect of the internal public debt on the monetary reserves in the banking system. These changes in the monetary basis lead to changes in the monetary offer. On the monetary multiplier, which serves as an indicator of the movement of reserves and bank deposits in the national economy