The chenchus a Primitive Tribal Group , a organically in inhabiting the Nallamalla Forest of Andhra Pradesh in southern part of India. The life of the Chenchus are food-gatherers and habituated in different ecological settings to explore the subsistence, Chenchu way of life has undergone several changes in accordance with the availability and utilization of resources that is not uniform across Region. To understand and make an effort to his best to investigate all the possibilities to record the past and present of the Chenchu's. occupational mobility and pattern,how the economic system of the chenchus in each environmental zone like: Interior, Fringe and Plain areas interferes with the natural and physical environment setting of Nallamalai Forests.The efficiency of their ethno ecological knowledge in presearve and up keeping their ecosystem knowledge in preserving The factors which disturb the subsistence pattern of living in different ecological settings have been observed and discussed to answer several queries in contemporary emerging techno-economic functions. The book is unique in Anthropological domain and anticipated as reference to the future Anthropologists