Readymade garment (RMG) sector is the most common and prospective form of business among microfinance sector in the world. the macro-economic performance of Bangladesh is hugely dependent on its (RMG) manufacturing sector. it has a great contribution on employment, woman empowerment and GDP that creates a great influence on global economy. it is not only the Scandinavians who have faith in Bangladesh for sourcing different types of garments, but other the big giants like USA have facilitated Bangladeshi RMG sector. But there are some restraints that lying behind Bangladesh's RMG sectors success. Such as- unskilled garment workers, infrastructure, political instability, unhealthy environment, low wage etc. Many researchers have study on these issues, but a few look at the organisational and leadership factors that influence sustainable RMG sector. This paper shows the strength and weakness of the industry and finds the solution to gain sustainability in the sector. The study is conducted under the case-oriented Research (COR) design.