This chapter explores the integrated mechanisms of global ocean–atmosphere circulation, emphasizing the interconnectedness between atmospheric and oceanic systems in regulating Earth’s climate. It begins with an overview of the general atmospheric circulation, highlighting the complex patterns of horizontal and vertical air movements responsible for redistributing heat, moisture, and momentum. The role of global ocean circulation, driven by temperature, salinity gradients, and wind patterns, is examined in depth, illustrating how it influences climate regulation and energy balance. This chapter further discusses the conceptual models of general atmospheric circulation, including the three-cell model and the intertropical convergence zone (ITCZ), which are crucial for understanding the global distribution of pressure, temperature, and precipitation. The ocean’s role in transporting heat and its impact on climate is also analyzed, providing a comprehensive view of the interactions between Earth’s oceans and atmosphere.