The invention discloses a two-dimensional code identification system used in a household education robot system. The two-dimensional code identification system comprises a main controller, a two-dimensional code identification unit, a video-audio processing system, a video interface unit and a power management unit, wherein the main controller is used for commanding work of the two-dimensional code identification unit, the video-audio processing system, the video interface unit and the power management unit; a barcode identification unit is used for transmitting read two-dimensional code information on an identification object to the main controller; the video-audio processing system is used for receiving and processing video and audio data, improving system performance and transmitting the identification object information to the main controller; the video interface unit is used for decoding video codes, editing the video codes into digital signals, transmitting the digital signals to a corresponding analog/digital conversion module in a chip for converting the digital signals into analog video signals, and transmitting the analog video signals to a main control unit; and the power management unit is used for performing power supply management and control on a handheld identification system.