Purpose: The main focus is to find out the environmental challenges that Bangladesh is dealing for the huge influx of Rohingya refugee people to Bangladesh. The research also aims to assess the dynamic situation of the crisis, identify the roles of Bangladesh government, NGOs as well as the International Organisations’ for Rohingya refugee crisis. Methodology: This study is context-dependent on information and an inductive data analysis. The paper uses a descriptive qualitative approach case study design that focuses on primary and secondary data showing the real ground of crisis. Data has been collected from the interviewees and experts. This research sets multiple methods of data collection including documents, policy, and historical analysis. Findings: Environmental imbalance occurred due to allocating 1,000 acres forest land for providing shelters to the refugees. Reserve forest has been destroyed endangering wild elephants. And it is causing landslides in the area, soil erosion, water scarcity, extreme heat wave, extreme rainfall, drought, deforestation, air pollution, and so on. Conclusion: This research leads to identifying the areas which have already been affected. The plans that need to work on to overcome the problems and that could provide necessary and sustainable solutions for Rohingya refugee. This study also could let people know the catastrophe Bangladesh is dealing and the impacts which can cause the ecological imbalance and failure the biodiversity of the areas in a greater way. This paper could bring benefit to society and make people conscious about the environment and also make them raise voices for the conservation of environment.