Sino-Indian border issue is a problem left over from history. Both sides agreed on a three step process to resolve the issue and are exploring the framework of settlement based on the Political Parameters and Guiding Principles. India’s attitude towards China is complicated. The preconception about China’s policy and behavior contributes to China threat theory and strategic concerns in india. The development of India’s military power and diplomacy is to some extent correlated with security and stability in the southwest region of China.