In order to meet the requirements of exploration of amphibious visual environment in military,taking the marine iguanas as the bionic object,a bionic robot suitable for amphibious environment was designed.The three-dimensional model of the bionic marine iguana amphibious robot was established by SolidWorks software,and its control system was designed.The crawling and swimming gaits of the robot were further designed and analyzed.The actuator,motor and camera were controlled by the STM32 controller to realize the crawling and swimming motion of the bionic marine iguana robot.Through the prototype experiment,the bionic robot has flexible movement,stable system operation,and good amphibious environment movement and detection ability.