Today, migration is one of the most important growing phenomena in the world, which has a significant impact on the relationships between people, societies and governments in the regions of origin and destination. Along with this important phenomenon, there is another concept called economic development. Economic development can be considered as one of the most important goals of the government at different political and even international levels. Due to the high share of the government in Iran's economy, the government plays a very important role in the migration of people. Considering that the main goals of economic development are to increasing social welfare, reduce poverty, establishing social justice, create employment, appropriate income distribution and other it can be expected that these factors will motivate people to migrate from areas with less economic development to areas with more economic development. In this research, an attempt has been made to investigate the effect of economic and environmental factors on migration, as well as factors affecting economic development in the provinces of Iran. For this purpose, cross-sectional data was used in 2016. Considering the very important relationship between migration and economic development, a model with two equations has been designed as a Simultaneous equations model and estimated by 3SLS method. The results show that regions with more economic development and creative human capital are factors for attracting immigrants. While environmental pollution has a negative effect on net migration. Also, the results show that the provinces that have moved towards industrialization, and the literacy rate is higher in them, are more developed.