The article is devoted to migration and multiple impact on social change, economic, cultural, including the drafting of threats to the security of the individual, the state, but also the region. Migration is in many ways motivated. It has its base cost (the difference in the level of development of life), ethnic, religious. The uncontrolled influx of people, it can become a destabilizing internal security of the country and disrupt the social sense of security, causingconflictsamong on national or religious (immigrants from Africa and countries of the Middle East). The problem intensifies increase in terrorist attacks, growth of religious fundamentalism and ethnic separatism. The scale of immigration is difficult to estimate. The uncontrolled influx of people change the image of the entire European Union, including Polish. Taken analysis shows that threats (potential and actual) result from the migration of the uncontrolled movement of people changing security environment of the citizen and the state.