After the end of the COVID-19 pandemic，the geopolitical landscape in China’s surrounding areas，including the South Asia and Southeast Asia subregions，has evolved deeply. Significant changes and major adjustments have emerged in the regional situation and local order. Whether viewed from the perspective of overall regional situation changes or analyzed from the perspective of the political and economic evolution of the main actors within the region，South Asia and Southeast Asia have been strongly influenced by the driving methods and directions of international pattern evolution，especially by three major factors：the evolution of the COVID-19 pandemic，the global strategy adjustment of the United States，and the Russia-Ukraine conflict. In the post-pandemic era，the U.S. strategy towards China has become more extreme，and the China-U.S. rivalry has accelerated the evolution of the power structure and reorganization of order in the regions surrounding China. The U.S.，leveraging its advantages in an alliance system，has exerted all-around extreme pressure on China，deepening the contradictions between China and the U.S. The China-U.S. struggle extends to the relationships between China and its neighboring countries，giving rise to opportunistic strategies towards China and behaviors of choosing sides among multiple neighboring countries. In the future，the trend of generalized security in China’s surrounding areas will become more prominent，and the security challenges faced by China in managing its periphery will significantly increase.