The present study is attempted to explore and evaluate the nuclear policy of India. The main objectives of this study is to discuss historical and global analysis of india,s nuclear policy. The data for this study is secondary data collected from books, newspapers, journals, research papers etc. The process of making nuclear choice arose from India’s own understanding of itself and the world order. In the initial phases, Indian nuclear programme was conceived as means of economic development. Atomic science and development assumed a significant role in the technological development and the modernization of the country. However the existence of threat from nuclear China and Pakistan covert nuclear programme is ascertained as a factor for India's nuclear choice. India opted for the policy of keeping its nuclear option open by refusing to sign NPT and CTBT on discriminatory grounds in late 1990's. India's decision to conduct nuclear test in 1998 and self-declared as a nuclear weapon state is an important transition from its past stand on nuclear weapon for development purpose only and India – US nuclear deal in 2005 was important decision in global order.