The population of the city of Dhaka has been projected at 17.6 million people, with upto 60% living in the slums. Bangladesh is urbanizing fast. People are moving to places where there are or perceived to have jobs and opprotunities. The capital city of Bangladesh is pulling rural migrants faster and larger than any other city in the country. 56% people migrated to Dhaka city for economic reasons but there are also some push factors working in the process of migration. Now-a-days slumdwellers are one kind of environmental migrants. The often natural disasters: flood, drought, cyclones, riverbank erosion destroys the agricultural outcomes every year.