Abstract: Assam has experienced huge and prolonged immigrations before independence of the country of India. Immigration has been posed a serious security threat to the people of Assam. Migration is a continuous phenomenon and it continues in near future. Article 19 of the Constitution of India provides its citizens the right to move freely throughout the territory of India and to reside and settle in any part of the country. In Assam, migrated people can be divided into two categories- (1) Foreigner and (2) Indian. The large-scale migration influxes into Assam have created a major identical problem’s in Assam. Historically, Economic factors have contributed to voluntarily migration of people into Assam.