The invention discloses an automatic reversing device having the identification function. The automatic reversing device comprises a reversing device and a millimeter wave radar three-dimensional environment sensing system mounted on the reversing device, wherein the millimeter wave radar three-dimensional environment sensing system comprises a millimeter wave radar, a rotary mechanical device, a control unit and a data processing unit, and the rotary mechanical device comprises a first rotary shaft, a rotation disc and a second rotary shaft. The reversing device has a simple and practical structure, can realize front no-dead-corner scanning coverage and further has advantages of accurate control, high positioning precision and good timeliness.