This article delves into the concept of seasonal health maintenance in Traditional Chinese Medicine (TCM), which is rooted in the ancient philosophical idea of “harmony with nature and unity of heaven and humanity.” It emphasizes the harmonious coexistence of humans and nature, advocating the adjustment of health maintenance strategies according to the changes of the four seasons: spring, summer, autumn, and winter. In spring, it is advisable to nourish the liver, maintain an orderly lifestyle, adopt a bland diet, and promote the growth of yang energy. Summer focuses on nourishing the heart, emphasizing cooling and heat relief, and moderate exercise to promote perspiration and detoxification. Autumn is the time to nourish the lungs, with a focus on a moist diet, maintaining a peaceful emotional state, and moderate exercise to enhance physical fitness. In winter, the emphasis is on nourishing the kidneys, keeping warm, consuming a warm diet, and reducing outdoor activities to prevent the dissipation of yang energy. Seasonal health maintenance not only concerns daily life and diet but also involves emotional regulation and moderate exercise. It holds inestimable value for enhancing physical fitness, preventing diseases, and promoting healthy longevity. Deepening the research and application of seasonal health maintenance in TCM not only helps to improve the national health quality but is also the key to promoting the modernization and internationalization of TCM health maintenance. It has profound significance for promoting excellent traditional Chinese culture and enhancing human health and well-being.