In Bangladesh rural-urban migration plays a significant role in rapid urbanisation where urban slums a favourite destination for poor migrants. The study mainly focuses on the analysis of the internal migration and the consequences of rural-urban migration on migrants' livelihood the case of poor migrants of Chittagong city, Bangladesh. The study exposes that predominantly migrants come from different districts of the country. This study analyses the attributes of migrants, motives behind migration, migrants' objective fulfilment and consequences of migration on migrants livelihood based on an assessment of 200 arbitrarily selected migrants' households. The study shows that better-earning opportunities, economic advancement were primitive motives for migration but in most cases, they only ensured their survival. Better living conditions with some civic amenities sometimes enriched their livelihoods which promote internal migration of Bangladesh. Plummeting imbalance and inequality between urban and rural areas be supposed to receive in burning concern to steady the rural-out migration. Keywords: Urbanisation, migrants, livelihood, economic advancement
