Abstract:The ocean contains a wealth of natural resources, the rational development and utilization of marine resources can greatly alleviate the problem of energy shortage, but the difficulty of resource exploitation due to the complex environment of the ocean cannot be ignored; In response to this series of problems, a new type of underwater vehicle is studied, the overall design analysis of the underwater legged robot is carried out, and the structure analysis of the structure analysis of the robot is carried out through three-dimensional modeling; The stress analysis of the important moving parts of the robot is carried out by the ANSYS software, and the design of the robot is improved; Use FLUENT software to perform fluid simulation and calculate the torque output characteristics of the robot legs; Based on the simulation results, the hardware system of the robot is selected to complete the overall design of the underwater legged robot.