This paper explores the nature and causes of social exclusion of the NGOs’ activities in Bangladesh. Data gath-ered from two NGOs (Proshika and Practical Action Bangladesh) working for the socio-economic development in Bangladesh. The paper shows that now a day the NGOs’ target groups and services have been specified to the people who are able to return back their micro-credit. As a result many people are now being excluded from NGO services who are known as ‘ultra poor’. The findings of this paper show that many blacksmiths and gold-smiths were out of services from both NGOs rather the NGOs selected purposeful target groups, replicate of program, and their short-term development approach, high-flying profile, rent seeking attitude, monolithic de-velopment approach, lack of accountability, complex loan procedure and high interest rate, and cut-off budget from their development project were helpful for such kind of social exclusion. The paper argues that that without inclusion of such groups of people, the overall socio-economic development would not be possible.