Introduction: Poverty is one of the challenges in the economy of any country . Economic development plans impact on all economic variables in each country . Regarding to the impact of development plans on poverty as an economic variable, investigation the effects of Development Plan on poverty is the aim of this paper. Besides, the practical results in this study, a new methodology for comparing poverty indices is proposed.

  Method: In this present paper, the data based on stochastic dominance approach is gathered for studying the impact of Fourth Program Economic Development on poverty.

  Findings: This paper has shown that the trend of poverty in this period in the whole country, urban and rural areas has declined .

  Conclusion: The results have indicated that the fourth development has a positive impact on poverty. It also reduces the poverty gap and severity of poverty . In other words, the positive effect of the fourth development plan on poverty is decreasing during this period.