Door-opening collision-prevention warning system

The utility model discloses a door-opening collision-prevention warning system. The door-opening collision-prevention warning system can detect following vehicles and control a vehicle door to be in a locked state temporarily, so that persons in a vehicle are prevented from being hurt due to the fact that persons unlock the door, get off the vehicle and are collided by following vehicles. A left distance detector is arranged in a left rearview mirror of the vehicle, the left distance detector is electrically connected with a vehicle body controller, the vehicle body controller is electrically connected with door lock switches of all vehicle doors and door lock motors of all vehicle doors, and the vehicle body controller is also connected with a compulsive unlocking device. The system is applicable to automobiles.