Human migration is the movement of people from one place to another with the intentions of settling, permanently or temporarily at a new location. The movement is often over long distances and from one country to another, but internal migration is also possible; indeed, this is the dominant form globally. People may migrate as individuals, in family units or in large groups. The objectives of the article is to study the overview of rural-urban migration, pull and push factors, Causes, positive and negative impact of migration. The present study is based on secondary data collected from different sources such as professional magazines, reference books, newspapers, journals and published reports. The collected data was compiled and analysed for the purpose of the study. The process of urbanisation has positive as well as negative economic and social changes. The positive effects include economic development, and education. However, urbanisation places stresses on existing social services and infrastructure. Crime, prostitution, drug abuse and street children are all negative effects of urbanisation. Also there tends to be a lack of social support for children in school and home by their hard-working, usually poor, parents. Inadequate income, overcrowded housing and poor living conditions create a fertile ground for the development of violence.