The new dynamics in US-China relations are increasingly complex and attracting global attention. In recent years, this relationship has experienced significant changes influenced by various factors, including the global economy, foreign policy, and security challenges. One of the main aspects of this change is increasingly fierce economic competition. China, with a rapidly growing economy, is now one of the largest economic powers in the world. More protectionist US trade policies, especially under the Trump administration, aim to protect domestic industry and reduce the trade deficit with China. The disaster of additional tariffs imposed on Chinese goods could result in greater tensions between the two countries. From a technological perspective, innovation is a crucial point in competition. The US and China are competing in the development of cutting-edge technologies such as artificial intelligence (AI), 5G and automotive running technology. US policies restricting access to Chinese technology companies, including Huawei, signal a significant shift in attitudes towards technological collaboration. This impacts data supply and security, sparking global concerns. Military relations are also an important highlight. Tensions in the South China Sea are increasing as the presence of US armed forces increases in the face of China’s territorial claims. Joint military exercises by the US and its allies in the region aim to emphasize the US commitment to regional security. This situation creates a higher risk of conflict and encourages diplomatic dialogue to prevent escalating tensions. In the context of climate change, the two countries show conflicting attitudes. Although the US and China have the potential to work together to address environmental challenges, China’s climate policy prioritizes economic growth, while the US under the new administration is more proactive in achieving emissions reduction targets. Cooperation in green technology and sustainable investment is essential to achieve this common goal. Social and cultural aspects also play a role in the dynamics of this relationship. Cultural and educational exchanges between the US and China can build better understanding between the two countries. However, political tensions often interfere with these initiatives, creating negative perceptions of one another. Going forward, US-China relations will continue to be influenced by broader geopolitical strategies, including their relations with third countries. Diplomacy and conflict management will be key in finding balance in this relationship. In an increasingly connected era of globalization, it is increasingly clear that collaboration in various fields will be an important element in determining the direction of the future dynamics of the two countries. Observers predict that the two countries must find ways to communicate effectively to avoid misunderstandings that could trigger conflict. Diplomatic initiatives on various fronts, such as multilateral forums and bilateral meetings, will play an important role in maintaining the stability of relations. Facing this challenge, both the US and China need to consider mutual interests while maintaining their respective national integrity. The world is watching closely how these changes will impact the broader international system and how both countries will adapt to the unforeseen challenges of the future.