This paper focuses on the applications of cooperative game theory in economics, examining various scenarios such as regulatory strategies in the sharing economy and profit allocation in supply chains. It discusses both theoretical approaches and practical implementations, emphasizing the potential benefits of cooperation in achieving efficiency, fairness, stability, and coordination in economic activities. It seeks to bridge the gap between theoretical frameworks and practical implementations, emphasizing the possible advantages of collaboration in economic decision-making processes. Additionally, it highlights the need for further research to address the challenges and limitations associated with the application of cooperative game theory in real-world economic scenarios. The paper concludes that cooperative game theory offers valuable insights and analytical tools for optimizing economic outcomes through cooperation. However, it also acknowledges the challenges and limitations inherent in its application, including complexity, assumptions about rational behavior, and distributional issues. By addressing these challenges and leveraging the strengths of cooperative game theory, policymakers and practitioners can better harness its potential benefits in various economic contexts.