This article provides a comprehensive exploration of the application and development of Traditional Chinese Medicine (TCM) within modern healthcare systems. It begins with a historical overview of TCM and delves into its fundamental principles, including concepts of Yin-Yang, the Five Elements, Qi, blood, and body fluids. The role of TCM in contemporary healthcare, particularly its effectiveness and potential in treating chronic diseases and mental health issues, is then analyzed. Additionally, the paper discusses future trends of TCM in global healthcare and strategies to enhance its international influence and acceptance. The study highlights the unique value of TCM in offering more holistic, preventative, and personalized medical services, despite facing challenges of further scientific validation and standardization. The article concludes by emphasizing the integration of TCM with modern medical practices as a novel approach to global health and well-being.