The dynamics of diplomatic relations between the United States (US) and China is a complex and evolving topic, with profound impacts on global politics, economics and international security. This relationship is colored by various issues ranging from trade to human rights, as well as influences in the international system. The US and China established formal diplomatic relations in 1979. Since then, the two countries have experienced periods of collaboration and tension. The era of globalization in the early 2000s presented new opportunities for cooperation in various fields, such as trade, investment and climate change. However, recent developments indicate a significant decline in bilateral relations. One factor that influences this relationship is the issue of trade. Trade tensions between the US and China have increased since the Donald Trump administration, which implemented tariffs on Chinese goods to reduce the trade deficit. These tactics sparked retaliation from China, which had an impact on relations between the two countries. Despite the negotiation phase and partial agreements, uncertainty over tariffs and trade policies remains an obstacle to more harmonious relations. Meanwhile, military aspects also influence the dynamics of this relationship. China has strengthened its military presence in the South China Sea, increasing tensions with the US and its allies in the region. The US responded by increasing military patrols in the region, maintaining freedom of navigation, and entering into strategic alliances with countries in the Asia-Pacific region. The level of military presence between the two countries shows how vulnerable regional stability is due to friction between the two countries. Human rights are another main issue in the relationship between the two. China has faced international criticism, particularly regarding its treatment of the Uighur minority in Xinjiang and repressive measures in Hong Kong. The US took a tough stance by imposing sanctions on Chinese officials and expressing support for pro-democracy protests in Hong Kong. China’s response to these sanctions has often taken the form of firm statements regarding intervention in domestic affairs. On the other hand, climate change and global health are the meeting points for cooperation. Both countries, as the two largest emitters of greenhouse gases in the world, have a responsibility to work together to overcome climate challenges. The 2015 Paris Agreement provided the basis for collaboration in efforts to reduce emissions and implement green technologies. In a multilateral context, the positions of the US and China in international organizations also influence their relations. The US is trying to maintain dominance in global institutions such as the UN and WTO, while China is pushing for a greater role in these institutions. Tensions between the interests of individual countries often produce debate and uncertainty in global policy. While relations between the US and China continue to develop, it is important to understand that the two serve not only as strategic rivals, but also as partners in a number of areas. The dynamics of this relationship are continuously influenced by domestic and international factors, as well as policy changes at the government level. In the next five to ten years, the possibility of changes in these relations remains, especially with elections due to take place in both countries. Diplomatic activities, bilateral missions, and meetings between leaders will continue to be important tools in finding common ground despite existing challenges. Countries around the world will continue to monitor and adapt to the influence caused by US and China relations, which will have an impact on the global political landscape in the future.