The north eastern states are blessed with nature’s ornaments. It is widely ornamented with exotic beauty. The biodiversity, flora and fauna, the hills, the culture, the customs and traditions are well displaying the immense energy possessed by the north eastern states of India which comprises of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Tripura and Sikkim. Indeed the states display a myriad mixture of culture and natural belongings. The natural resources and potential hidden units play a major role in determining the advancement of the entire north eastern states. The richness in biodiversity is the key to achieve sustainability and sustainable development. If the environmental resources are used and utilized sagely, the region can outperform the problems of yearly occurring floods, landslides, land erosions, deforestations, animal poaching etc. Let me take into account one of the major problems which the state of Assam is facing: Forest land encroachment. Encroachment of forest lands by the people is causing a serious threat to the environment, and particularly the wild animals that have their habitats in the forests. If the present trend continues, vulnerable animals would soon lose out their habitats and go extinct. For example: The famous Kaziranga National Park and Manas National park, which are the two most important UNESCO world heritage sites of the state of Assam are well confronting encroachment of forest land and poaching of wild animals. To our dismay, it is disheartening to know that the government couldn’t take effective measures to stop this ongoing activity. This is not a new situation but a problem which has been happening continuously since many decades. The tragic situation should be considered as a major obstacle against development and should be treated without further negligence. Looking at the records, the entire forest cover area is approximately 13,99,264 hectares of land and 3,42,650 hectares were under encroachment, which is increasing rapidly aggravating the present situation. What could be the reason behind? Is this the increasing population, or the need of black money made people blind to execute such activities? Contemplating on the current crisis the government must ensure that no more fresh encroachment takes place in the remaining places, the illegal settlers are identified and evicted from the forests land that has been illegal living and constructing homes and check the proper detailed documents in the nationality of those people who illegally live a free life in the forests.