China and India enjoy the most robust economic growth in the world. They are also two important players in the international arena that cannot be underestimated because of their population, nature resources, and regional influence. The fact that China and India are forging a strategic partnership will not only reshape Asia's geopolitics, but also have a significant global impact. The current relationship between China and India is still very fragile due to different political systems, international visions, and geopolitical benefits between the two countries. Their bilateral relationship is mixed with Realism and Idealism. Since 1990s, India has adopted a new forward-looking foreign policy with East Asian countries; known as ¡§Look East Policy¡¨, and this policy help establishing the relationship between Taiwan and India and reaching a new stage. This policy has made some progress since then, and this India new foreign policy obviously has strategic politics in mind, on being security and strategic alliance, and intention to compete with China. To sum up, the two countries still see each other as an important rival. For example, on some international issues in Asia, India's foreign policy has dual characters. On one hand, India wants to improve its relations with China; on the other hand, India takes precautions against and antagonizes China. Adding the influence factors from other countries with global influence such as the United States, Japan, Russia, etc., the India-China relationship is becoming more complicated. The Post-Cold War Era provides less comfort than questions for the future of Sino-Indian relationship. This is bound to be influenced by many imponderables in their respective domestic and external environments. Whether both countries can lay their disputes aside in the future, and construct an economic alliance, or they cannot get along well, there will have important consequences. Moreover, how to reassess the Indian government policy toward China? What are the potential impacts between the India-Taiwan relationships? How the Indian government solidifies its own national interests between China and Taiwan? These are the major subjects addressed in this dissertation. This doctoral dissertation is mainly divided into three parts: First, the India-China border problem has been there for a long time and the contradictions presented by different perspectives from both sides are discussed. The second part, through such historical-oriented topic such as the Tibet status and its democratic movement, and the latest outlook of India's internal political development shows the different arguments and national interests to formulate internal and international policies, and derives into a new analogy and theorem as a starting point to analyze the current India political transformation and international policy. The third part is to discuss the Indian government's policy, the self-esteem and attitude, current development of India-China cooperation in economy and trade, India's role in the Cross-straits relations, and then assesses the future development of the India-China strategic partnership, and the potential influence on the international affairs.