Bangladesh is the largest alluvium in the world. There are some aspects like geographical position and seasonal diversity has made Bangladesh unique. India and Malaysia covers Bangladesh by border and by the narrow siliguri corridor separated from Nepal and Bhutan. The Ganges (Locally known as Padma), the Brahmaputra and the Meghna are Asia’s largest rivers. Bangladesh has 700 rivers with rich biodiversity. It has longest sea beach in the world and world largest mangrove forest. It has varieties of the island including the sand bar. There is a significant portion of tribal people in the hilly parts of the country they are Chakma, Garo, Marma, Tanchangyas, Biharies, Oraons, Tripuries, Mundas, Rakhines and Rohingas etc. There are mainly four types of religion involves they are Islam, Buddha, Hindu and Christian. Social indicators of human development include improved primary education, maternal and child health, gender parity, food manufacture and population restrain. In Bangladesh, there is a place with rich biodiversity, fish production and the aquatic plant which is known as tanguar haor. This haor has got foreign importance and many projects have been running for the betterment of the resources in haor. In Tanguar Haor there are many places for an attraction like Tekerghat, Barchara, Jadu Kata River, Bareker tila, Chuna Patharer Lake Etc. In the north-eastern side of this country, there is Meghalaya. Wetland has created by fresh water flow from there. Tanguar Haor is a subservient element of that arrangement. As a reservoir of aquatic biodiversity, Tanguar Haor has been recognized internationally. Compared to other haors, the availability of fresh water throughout the year has enriched its biodiversity. In Bangladesh one of the largest wetlands is tanguar haor. It is located in Sunamganj of Dharmapasha and Tahirpur sub-district. It is in the north-eastern corner of Bangladesh. The area involves 9727 hector area of 10 mouzas of 2 subdistricts and 51 haors. The Mouzas enveloping haors are (1) Jagadishpur, (2) Bhabanipur, (3) Lamagaon, (4) Ramsinhapur, (5) Mahajampur, (6) Maindag, (7) Mayajuri, (8) Bhangachara Purba, (9) Noagaon, and (10) Tanguar Haor. Tanguar Haor consists of 120 lakes of different size. The main haor is 28 square km (water portion) and rest consists of the village and cultivable lands. Water dries during the winter season and that time banks of 24 lakes (local name is kanda) woke up. Local farmers cultivated Boro Rice in that portion (Kanda). This place has also been used as a farm of cows. It has a natural importance with an international focus. 46 villages consist of the area of tanguar haor; within the haor are about 100 km2 of which 2802.3 ha2 is a wetland, during the time of drizzle entire area covers by water. It is a source of income for more than 56000 people. It has been announced as an ecologically critical area by the government of Bangladesh in 1999. It is now considering critical phase due to the exploitation of natural resources. Haor basin was declared as a Ramsar site-wetland (2000) of foreign importance, The government has declared to protect the natural resources of this haor base forest and several actions have been taken to preserve this wetland. The year 2003 government had taken initiative to enforce the law to protect Tanguar Haor to encourage the sustainable use of the Tanguar Haor resources; The Bangladesh government has introduced the concept of “wise-use”. In the year 2005 government got support from IUCN AND SDC to regulate the haor according to Ramsar principal.