This review explores the application of computational fluid dynamics (CFD) in biomimetic designs for underwater vehicles, focusing on propulsion, drag reduction, and noise reduction. Biomimetics, inspired by nature, aims to create efficient and unique designs for underwater vehicles by mimicking biological structures, behaviors, and functions. CFD, a powerful tool for simulating fluid behavior, plays a crucial role in optimizing the structural design of underwater vehicles, enhancing their hydrodynamic and kinematic performance. The integration of biomimetics and CFD introduces a novel approach to underwater vehicle design, offering broad prospects for research in natural science and engineering. The review discusses the application of CFD in biomimetic propulsion, including hydrofoil-like tail fin propulsion, robotic fish propulsion, batoid-like propulsion, dolphin-style propulsion, and squid-style propulsion. These methods aim to improve speed, maneuverability, and energy efficiency while reducing drag and noise. CFD methodologies such as RANS, URANS, LES, and DES are used to simulate fluid dynamics, while numerical methods like FVM, FEM, LBM, and IBM are employed for discretization and simulation. The review also addresses the challenges and future developments in applying CFD to biomimetic underwater vehicle applications. It highlights the importance of interdisciplinary collaboration and the potential of integrating data-driven methods with CFD for optimizing propulsion systems. The study of biomimetic drag reduction focuses on structures inspired by aquatic organisms, such as shark skin and flounder, which can significantly reduce resistance. CFD simulations have shown that these biomimetic surfaces can reduce drag by up to 25%, enhancing the efficiency of underwater vehicles. In conclusion, the integration of biomimetics and CFD offers promising solutions for improving the performance of underwater vehicles. The review emphasizes the importance of continued research and development in this field to achieve more efficient and adaptable underwater vehicles.This review explores the application of computational fluid dynamics (CFD) in biomimetic designs for underwater vehicles, focusing on propulsion, drag reduction, and noise reduction. Biomimetics, inspired by nature, aims to create efficient and unique designs for underwater vehicles by mimicking biological structures, behaviors, and functions. CFD, a powerful tool for simulating fluid behavior, plays a crucial role in optimizing the structural design of underwater vehicles, enhancing their hydrodynamic and kinematic performance. The integration of biomimetics and CFD introduces a novel approach to underwater vehicle design, offering broad prospects for research in natural science and engineering. The review discusses the application of CFD in biomimetic propulsion, including hydrofoil-like tail fin propulsion, robotic fish propulsion, batoid-like propulsion, dolphin-style propulsion, and squid-style propulsion. These methods aim to improve speed, maneuverability, and energy efficiency while reducing drag and noise. CFD methodologies such as RANS, URANS, LES, and DES are used to simulate fluid dynamics, while numerical methods like FVM, FEM, LBM, and IBM are employed for discretization and simulation. The review also addresses the challenges and future developments in applying CFD to biomimetic underwater vehicle applications. It highlights the importance of interdisciplinary collaboration and the potential of integrating data-driven methods with CFD for optimizing propulsion systems. The study of biomimetic drag reduction focuses on structures inspired by aquatic organisms, such as shark skin and flounder, which can significantly reduce resistance. CFD simulations have shown that these biomimetic surfaces can reduce drag by up to 25%, enhancing the efficiency of underwater vehicles. In conclusion, the integration of biomimetics and CFD offers promising solutions for improving the performance of underwater vehicles. The review emphasizes the importance of continued research and development in this field to achieve more efficient and adaptable underwater vehicles.