The history of Mehao Wildlife Sanctuary is intertwined with the indigenous Mishmi people who have traditionally inhabited the Dibang Valley. The area was recognized for its rich biodiversity and was initially declared a protected area to conserve its unique flora and fauna. Over the years, efforts have been made to enhance the sanctuary's management and protection. While detailed historical records specific to the sanctuary's establishment are limited, it's understood that the local communities have played a significant role in maintaining the ecological balance. The sanctuary stands as a testament to the importance of preserving natural heritage and the symbiotic relationship between humans and nature. Conservation efforts continue to focus on protecting the sanctuary's unique wildlife and habitats.