The most governments in the world especially developing countries under corona virus pandemic are going to borrow from their central banks to face the negative economic and social effects of this pandemic , based on your study to public loans , what the type of this loan and what are the main economic effects of this loan concerning on the following: 1-The effect of this type of borrowing on the interest rate and the private investment. 2-The effects of this borrowing on the output and market prices especially the most industries don't operate (aggregated supply decreases). 3-The main social and economic effects of inflation. *