The utility model provides a double dynamical contact net detection car suitable for high -altitude area high -speed railway circuit, the frame has, frame lower part both ends all are equipped with the bogie, be equipped with pilot soft breeze loudspeaker on the frame in the bogie outside, the frame lower part is fixed with exhaust system in proper order, air intake system, hydraulic tank, cooling system and battery box, the frame up end is equipped with the automobile body, the automobile body includes cab and carriage, 4C detecting system is equipped with on the carriage, the interior still is equipped with the apparatus of oxygen supply, the terminal surface middle part is equipped with generating set under the frame, it forms the two driving system of vehicle promptly all to be equipped with driving system on the both ends position of frame. The utility model discloses can promote whole car power, satisfy and fall under the merit condition requirement that the highest functioning speed reaches 120kmh in high haiti district, satisfy high -altitude area's the 4C detection device power consumption and the requirement of life power consumption to high -altitude area oxygen deficiency condition can make adverse weather conditions such as the whole fine antagonism height above sea level of each fitting up homoenergetic of car, temperature hang down, the sand blown by the wind is big for providing safeguard.