The invention discloses a traffic junction blind-help system, which is characterized in that the traffic junction blind-help system is based on RFID (Radio Frequency Identification Devices) radio frequency identification technology and ultrasonic detection technology, and comprises electronic tags, an intelligent cane, an intelligent mobile phone, a traffic light annunciator and a traffic light signal acquisition and transmission module; the intelligent cane mainly comprises a radio frequency reading and writing module, an upper ultrasonic module, a lower ultrasonic module, a master control module, a power supply module, a wireless receiving module, a Bluetooth module, a handle module and a light-emitting diode lamp bank; the electronic tags comprise the electronic tags paved below blind guiding bricks on streets and the electronic tags paved below zebra crossings of traffic junctions; the traffic light signal acquisition and transmission module consists of a singlechip traffic light signal acquisition module and a wireless emitting module embedded in the traffic light annunciator; the collection module acquires a traffic light signal and then emits the traffic light signal to theoutside through a digital module; and when the intelligent cane of a user receives current information, the information is transmitted to the intelligent mobile phone for processing through the Bluetooth module, and simultaneously, the user is informed of the result.