Migration is the population movement from one place to another place(UNESCO,2016). Internal is when people migrate from one place to another place within the same country. International migration is when people move from one country to another country(UNESCO,2016). People migrate for many different reasons. These reasons can be classified as economic, social, political and environmental. This will discuss depend on the economic significant advantage of immigration. It will argue that migration is disadvantageous to humanity due to it professional experience, cheap labor, remittance, and labor shortage.One disadvantage of migration developing countries loss of skilled worker(Shah,2008). This is maybe because some people migrate to another country to improve their professional skill.