Early warning device for preventing opened automobile door from affecting passing of other vehicles

The utility model discloses an early warning device for preventing an opened automobile door from affecting passing of other vehicles. A left-front monitoring radar, a right-front monitoring radar, a left-back monitoring radar and a right-back monitoring radar are respectively connected with input ends of a single chip microcomputer through A/D converters. A left-front automobile door handle pressure sensor, a right-front automobile door handle pressure sensor, a left-back automobile door handle pressure sensor and a right-back automobile door handle pressure sensor are respectively connected with operational amplifiers. Each operational amplifier is connected with the input end of the single chip microcomputer through each A/D converter. Output ends of the single chip microcomputer are respectively connected with a left-front early warning lamp, a right-front early warning lamp, a left-back early warning lamp, a right-back early warning lamp, a buzzer and a middle control lock. The early warning device is si