The invention relates to a vehicle inverted connection proof device. The vehicle inverted connection proof device comprises a vehicle body (1), an external starting plug (2), a general switch (3), a storage battery (4), a contactor I (5) and a contactor II (6). The vehicle inverted connection proof device avoids the electric equipment from being damaged due to connection error of a positive electrode and a negative electrode, well protects a distribution box and electric equipment when the vehicle is powered through the storage battery or a battery pack and a power source outside the vehicle and guarantees safe and reliable operation of an electric system.