In the context of the intensifying game between major powers, the geopolitical importance of the South China Sea and the Indian Ocean has become prominent at the same time, and they have become the key areas of strategic competition between China and India. After N. Modi came into power in 2014, he upgraded the "Look East policy" to "Act East policy", aiming at the South China Sea. India is unwilling to remain silent and passive in diplomacy and actions, especially in the past two years, India's attitude has shifted significantly. Like other extraterritorial powers such as the United States, India does not want the South China Sea to be dominated by its rival, China, and its main strategic intent in its continued involvement in the South China Sea is to further complicate the South China Sea issue in order to restrain China and thus ease its own strategic pressure in the Indian Ocean and border areas. Driven by this, the South China Sea issue is increasingly becoming a new negative factor in the relationship between India and China. The proposed article seeks to identify the key points of the conflict and their consequences.