The aim of this study was to explore the socio-economic condition and poverty reduction among the migrants. This study was based on the field survey and the sample size was 240. It was an attempt to identify the main causes of rural-urban migration and to explore its socio-economic condition and poverty situation in the selected areas of Khulna City Corporation. The main causes of rural-urban migration at household and individual level were for job searching, migration after getting new job and for quality education. Persistent migration from rural areas to the K.C.C Khulna City Corporation) has serious influence on the level of productivity, the state of urban infrastructure and environmental conditions since with migrant?s cities grow faster than the capacity of the economy to support them.