The Constitution of India does not define Scheduled Tribes as such; the Article 366(25) refers to scheduledtribes as those communities who are scheduled in accordance with Article 342 of the Constitution. According to Article 342 of the Constitution, the Scheduled Tribes are the tribes or tribal communities or part of or groups within these tribes and tribalcommunities which have been declared as such by the President through a public notification. The Constitution of India incorporates several special provisions for the promotion of educational and economic interests of Scheduled Tribes and their protection from social injustice and all forms of exploitation. These objectives are sought to be achieved through a strategy known as the Tribal Sub-Plan strategy, which was adopted at the beginning of the Fifth Five Year Plan. The strategy seeks to ensure adequate flow of funds for tribal developmentform the State plan allocations, schemes of Central Ministry Departments, financial and developmental institutions. The cornerstone of this strategy has been toensure earmarking of funds for TSP by States in proportion to the ST population in those States. The tribe means a set of people theoretically of common descent. It commonly denotes a community, a race, a breed or a class of people. The definition of the word Tribe is concerned and applicable to everyone. A tribal isa person belonging to that group. The word tribal is mistakenly understood as a Girijan or hills man. Generally the Girijan community should be called hill tribes. They are first listed out in the schedule to the constitution conferring on them certain rights and privileges. Thus they are called scheduled tribes. Thepeople in practice understand the term tribal as a hill person and call him/her a Girijan in Indian language for the sake of convenience. According to Dr.B.P.Chaurasiasome indicators distinguish Scheduled Tribes from other sections of the people. They live in relatively isolated hills and forests; they are the oldest inhabitants of their native place; the economically and technologically they are still backward; their language, culture, beliefs andcustoms are different and their sense of history is poor. In India there are 427 main tribal communities living. The India ranks the second in having the tribal concentration in the world next only to Africa. It isestimated that the predominant tribal areas comprise about 15 per cent of the total geographical area of the country. In India tribal communities use their own dialect which is in vogue in their region. The Gonds groups of tribes are mostly concentrated in Maharashtra, AndhraPradesh and Madhya Pradesh. The Bhils are concentrated in Rajasthan, Gujarat, Maharashtra and Madhya Pradesh.The Santhals appear in large number in Bihar, Odessa and West Bengal. The percentage of tribal people livingin Mizoram Nagaland, Meghalaya and Arunachal Pradesh is quite high with reference to the total population. In Union Territories of Dadra and Nagar Haveli the tribes form a very high percentage of 78.99 and in Lakshadweep the percentage is even higher i.e. 93.15. The total population of Scheduled Tribes in the country is 807.29 Lakhs which constitutes 7.86 percent to 1000.83 lakhs 8.27 per cent during the period 2001 to 2011. In Andhra Pradesh according to 2001 Census, the total population is 453.97 lakhs out of the same 23.73 lakhs are tribal people constituting 5.23 per cent of the total population of the State and according to 2011 Census, the total population is 499.77 lakhs out of thesame 27.41 lakhs are tribal people constituting 5.53 per cent of the total population of the State. There are 33identified Scheduled Tribe Communities residing in both hilly and plains areas of the State. The many tribal people live in and around hilly tracts and valleys where river water is available. The Gonds, Koyas, Hill Reddis,Bhagatas, konda Valmikis, Savaras and Khonds, Erukala,Yanadi, Chenchu, Sugali are the major tribal groups in Andhra Pradesh. These people are accustomed to live in small huts. The most of them spend their lives below poverty line. Their way of life also is different from that of the outside world.