This essay provides a comprehensive analysis of Foreign Direct Investment (FDI) in India, exploring its multifaceted impact on the country's economy. It begins by defining FDI and its significance, differentiating between Greenfield and brownfield investments. The essay then delves into the advantages of FDI, highlighting how it facilitates access to global markets, fosters infrastructural development, introduces new technologies, generates employment opportunities, stabilizes exchange rates, and promotes growth in backward regions. Conversely, the essay critically examines the disadvantages of FDI, including the potential displacement of domestic industries, environmental concerns, vulnerability to exchange rate crises, cultural disruptions, increased political corruption, and inflationary pressures. The analysis concludes by acknowledging the dual nature of FDI, emphasizing the need for a balanced approach to maximize its benefits while mitigating its risks, thereby fostering sustainable economic development in India.