Abstarct: Poverty represents many problems at the community level and causes the poverty trap, and if this cycle is not broken, it will continue. Absolute poverty is widespread in most developing countries, especially in Iran, which can be attributed to the high per capita public debt of these countries. In this study, the aim is to model the dynamics of poverty trap and debt accumulation in order to identify the components of poverty spread. Sensitivity analysis has been evaluated in three scenarios: decrease in investment rate, increase in per capita income and decrease in population. baxsed on the results, the value of the variable per capita income of each worker in the first scenario with a decrease in investment for the next two to three years has almost a steady trend and then with increasing costs and low income of employees this variable has decreased. Also, in the second scenario, as the population increases, the costs of each worker increase in proportion to the efficiency. On the other hand, according to the third scenario, the rate of return per worker and per capita income will also increase with decreasing population.