Currently，the world pattern has been suffering from the collision of global problems one after another，which makes the global governance more closely linked with the international order. In this context，the great power strategy is still affected by the inertial thinking formed during the cold war. What’s worse，the occurrence of various changes and crisis brings the internal and external development strategy of a country into dilemma. “OBOR” is a deterministic choice made by Chinese government under the conditions of a rapidly changing world pattern and a rise in the uncertainty of the surrounding environment and an important move to explore the means of global governance and seek the deepened economic and security cooperation with countries along the route. China is the largest neighboring country of South Asia. Although the market in South Asia has great potential in demand and broad cooperation space，compared to Southeast Asia，Central Asia and other regions，the cooperation between China and South Asia is faced with more obstacles to overcome. The missing of cooperation opportunities and the formation of cooperation dilemma are often narrowly limited by the “geopolitical imagination” and the misunderstanding and conceptual conflict there from. The strategic position and the breadth and depth of cooperation of South Asia in the “OBOR” initiative not only depend on the geopolitical structure itself and its position in the regional and world pattern，but also depends on China’s geopolitical structure，China’s strategic positioning and claim in South Asia as well as the interaction between China and South Asian countries. The Indian difficulties of “OBOR” in the South Asian direction，after all，consist in the Sino Indian relations. The solution of this problem requires the joint efforts of both sides. We have reasons to believe that as long as China and India are ready to put efforts and take action to strengthen communication in humanities and seek cooperation in the economic and security field，the “dividends” of cooperation will overflow to the political field and become the lubricant of political trust，eventually pushing forward the development of Sino Indian relations.