Vehicle collision safety protection system and method, vehicle and medium

The invention discloses a vehicle collision safety protection system and method, a vehicle and a medium. The vehicle collision safety protection system comprises a first protection switch unit which is arranged in a high-voltage loop of a power battery; the second protection switch unit is connected to the positive electrode of the power battery in series; the at least one collision detection unit is used for detecting whether the vehicle collides or not; and the control unit is used for controlling the second protection switch unit to be switched off when the vehicle collides and controlling the first protection switch unit to be switched off so as to perform dual protection. According to the scheme, the first protection switch unit and the second protection switch unit are controlled to be switched off at the same time, under the condition that one switching-off mode fails, the other switching-off mode can achieve the purpose of cutting off high voltage, the success rate of cutting off the high voltage is i