Modi took office as India’s Prime Minister in 2014, and started second term in 2019. In order to safeguard the party interests of the Bharatiya Janata Party(BJP) and the Hindu ethnic groups, Modi administration adopted radical policies to promote Hindu nationalism. These policies led to strong Hindu nationalism, rapidly intensified conflicts with other ethnic groups, and eventually filled India with the sentiment of all ethnic groups. In order to divert the national attention and the energy of nationalism, the Modi administration took aggressive diplomatic measures against the neighboring countries. The Modi administration realized the transformation of domestic religious nationalism into the aggressive diplomacy in China, Pakistan and other countries, but it brought a great impact on India's surrounding diplomatic environment, especially led to significant influence to the relations between China and Pakistan. The Modi administration reversed relations of India-China and India-Pakistan respectively, increased opposition and exclusion between India and these two countries; Indian nationalism broke the fragile balance of the geopolitical situation and posed a danger to peace and development in South Asia, meanwhile China and Pakistan developed a closer partnership.