Abstract. The article examines the peculiarities of interaction between market participants in the context of globalization. The key factors affecting the market system, such as monopolization, government intervention, financial speculation, and environmental restrictions, are analyzed. The author discusses the consequences of globalization for countries with different levels of economic development and suggests methods of solving problems related to the violation of market mechanisms. In particular, antitrust policy, international cooperation, and environmental regulation are considered. Globalization has significantly transformed the conditions for the functioning of a market economy, creating new development opportunities and giving rise to threats of market disruption. This issue is particularly relevant in the context of the growing influence of transnational corporations, financial speculation, and environmental challenges that require effective regulatory mechanisms at the global level. The globalization of financial markets has opened up new opportunities for investment and development but has also led to significant risks associated with financial speculation and instability. Reforms of the global financial system include introducing stricter rules for financial transactions, increased supervision of banks and investment funds, and creating mechanisms for rapid response to financial crises. One of the key ways to overcome market failures related to environmental constraints is to develop a “green” economy. This involves stimulating innovation in environmentally friendly technologies, providing subsidies for companies investing in sustainable development, and creating a carbon trading system that would help reduce the negative impact on the environment. Thus, in globalization, the market mechanism is becoming increasingly vulnerable to various external factors, such as monopolization, government intervention, financial speculation, and environmental restrictions. While globalization has created new opportunities for economic development, it has also brought significant challenges that require effective measures to maintain the stability and competitiveness of market relations. To ensure the effectiveness of the market mechanism, it is necessary to implement comprehensive reforms to strengthen antitrust regulation, control financial markets, develop the digital economy, and ensure environmental sustainability.