The Misings are one of the major communities of Assam dwelling mostly on the valley of Brahmaputra and her tributaries contributing the growth and development of composite Assamese culture. The majority of the people are still living in the flood affected and isolated areas with old age traditions and modern civilization has practically left them untouched in many aspects. They have got a MURONG SYSTEM- the backbone of their social institution which is unique by its own nature. The MURONG system has been followed as their tradition from immemorial past and every Mising village should have a MURANG to reflect their social unity and economic strength. Although, the MURONG house is a term used in some tribe to denote youth clubs of unmarried boys and girls (YOUTH DORMITORY), yet it has much more important socio-cultural significance for the Mising people. In the Mising society MURONG is a symbol of village unity, integrity and assimilation. The performance of collective social functions, feast, festivals, training of dancing and singing etc. are some usages of MURONG. It can also be used as a guest house for some honorable guest and as a court of social justice. The origin of the MURONG system can’t be traced but we can say that it is an age old tradition connected with one of their ways of defense from other tribes during life in the hills. The term MURONG has been a matter of debate still now and a slight variation of its pronunciation as ‘MVRONG’, MO: RONG’, MORONG etc. exists among the different sub groups of the Mising people. Now majority of the people prefer the term ‘MURONG;. The ‘MURONG’ house of the Mising society usually constructed in the central or the peripheral part of the village for convenience of communication to the visitors. It is slightly longer that an ordinary Mising ‘CHANG GHAR’ and has no walls. The MURONG presents a very spectacular sight and is the most beautiful and gorgeous building in the village. The front porch of MURONG of a village is visible from a distance. The MURONG has thatched roofs and very high quality posts are used for its superstructure. The decoration and construction is so superb that ones minds is bound to be filled with awe and admiration at such indigenous skills. The beams are made of some quality woods and their surfaced are decorated with pictures of DO: NYI (sun), PO: LO ( Moon), TAKAR (Star), SORMON(Crocodile), SITE (Elephant) etc. those pictures are painted with different appropriate colors and they reflect some of their traditional beliefs as forefathers ‘RU:NC PVNC’. In the quality of woods are specifically tried to use such as ‘TAPVD’, TAKINANG’, TALC, TANGNO etc. with the belief that evil spirits cant take shelters in that MURONG. It is the choice of the good spirits only. There is a big ‘MCRAM’ occasionally two or more in the central part of the house meant for burning firewoods during festive occasions. ‘PCRABS’ are kept hanging over each MCRAM for drying meat and keeping other materials used for cooking. There are two ‘KOBANG’, one at each end of the house. The raised platform of MURONG is made of split bamboo and they are arranged very nicely so that platform can be used for dancing, sleeping etc. during festive occasions. A small sized boat is kept on the southern floor of the MURONG for temporary storage of water for using during PO:RAG festival particularly. During this festivals the usage of PO:DOR is essential which is the biggest TA:SUK kept hanging by ropes at the ‘KOKTAG’ of the platform for filtering PO:RO APONG. There are many small sized TA:SUK and are all made of split bamboos and are conical in shapes. After the completion of constructing MURONG meant for a particular social occasion. The village people assemble and pray their forefather offering APONG, TAKE etc. The MURONG is directly related to the most important social festival of the Mising- PO:RAG. It is a harvest festival and it can’t be performed without a MURONG. ‘MIBU’ the Mising priest, has to conduct this auspicious social occasion in the MURONG. The organizational integrity of this institution is best felt and appreciably executed at the time of annual harvest festival and during some decision making occasions of the village people under ‘DO:LUNG KCBANG (Village Council) and ‘MVMBVR YA:ME (Youth Council). In earlier times, the MURONG had been the best school for the practical life of the Mising youth. The MURONG has a great influence on the life of the Mising people. The disciplinary influence of the society in MURONG is an aspect of its utility. The disputed opinions of the members of the village are settled at MURONG, petty cases of theft, assaults, quarrels, land partition disputes, social crimes arising of out disobedience to customary rules are settled at MURONG. Complaints regarding anything social or religions are brought before the village elders while the assemble in the MURONG. The DO:LUNG KCBANG deliver judgment and punish the offenders. Again co-operate, and the date and time for the proposed work is also decided at MURONG. To speak in short, it is an institution which fostered mutual understanding of individuals as well as social problems. It is also paves the way of social integration of the communities at the village level. The MURONG can also be used sometimes for the training ground for boys and girls in the arts of singing, dancing, spinning and weaving as well. On occasions it can be used to entertain the distinguished visitors and guest. For the youth after the days hard work, they take their evening meal in their respective houses and then gather together in the MURONG. Some will gossip, some will sing while other will play flute of beat the drum. The MURONG house is open to all sections of the Mising society on all occasion including the PO:RAG festivals. But many of these days traditions have gradually been abandoned by the Mising society. Some of the functional aspects of MURONG have been losing importance as the institution itself is partially at adying stage. Only in some interior and big villages the existence of MURONG is felt. Moreover, because of the poor financial position most of the village Mising people cant efforts construction of MURONG and celebration of PO:RAG. Although the Mising people are maintaining many of their traditional socio-cultural traits. Yet modernism has been gradually penetrating into their culture. The concept of MURONG is not an exception, hence many of its important aspects are gradually going to be abandoned. Moreover because of scarcity high quality woods as a result of gradual deforestation, the MURONG posts are in position to be replaced by stone pillars. Under such circumstance, this traditional institution cant but undergoes some changes in its construction design and functional aspects. The Mising people no longer feel the necessity to spend the night at MURONG which is not compatible with the modern system of education. Moreover, still today MURONG stand as Misings Principal traditional socio-cultural institution of great importance.