The application discloses a cross-medium vehicle and a cross-medium method of the cross-medium vehicle. The cross-medium vehicle comprises a vehicle body, a first
fuselage and a second
fuselage, which are sequentially arranged from a first end to a second end of the vehicle body. The first
fuselage is a rotary body structure suitable for
air navigation, and the second fuselage is a ship type structure suitable for water navigation. A first driving
assembly is arranged at a middle part of the vehicle body, and is used for controlling the stability of the cross-medium vehicle in a cross-medium navigation process. A second driving
assembly is arranged at the first end of the vehicle body, and is used for controlling the stability of the cross-medium vehicle in
air navigation. A third driving
assembly is arranged at the second end of the vehicle body, and is used for controlling the stability of the cross-medium vehicle in
underwater navigation. The cross-medium vehicle and the cross-medium method of the cross-medium vehicle can reduce the resistance of the cross-medium vehicle in the navigation process, and have high control stability in
underwater navigation, cross-medium navigation and
air navigation.