The utility model relates to a safety device that vehicle stop that the messenger travel, concretely relates to fixed movement safety stake, including the pile body, still include base, gyro wheel and fixed lock, the pile body outside is equipped with the anticollision barrier, and the anticollision barrier includes the fixed loop, sets gradually two -layer crashproof layer between fixed loop and the pile body, the two -layer buffer layer that sets up between crashproof layer, and pile body bottom fixed roll is equipped with on the gyro wheel and locks the structure that crashes, and corresponding gyro wheel sets up the slide rail on the base, sets up fixed the lock between base and the pile body, corresponds on the pile body to fix to lock to set up the lockhole, sets up the visor on the lockhole. The utility model discloses can effectively prevent the vehicle to make a round trip after fixing well, under the emergency, can remove the pile body again and open the passageway, allow the vehicle to pass through smoothly, use manpower sparingly.