An auxiliary examination device for the imaging department solves the problems that at present, when a doctor shoots abdominal X-ray radiography on a baby, the baby or a seriously ill patient cannot stand, the radiography quality is affected, and other diversified auxiliary examinations cannot be met for different children patients. The angle of the positioning plate is adjusted through the rotarydisc capable of rotationally adjusting the angle, the first swing rod and the second swing rod which are parallel to each other are rotationally connected to the rotary disc, the connecting block isarranged between the first swing rod and the second swing rod, the sliding groove is formed in the connecting block, and the first positioning column and the second positioning column are slidably connected into the sliding groove; an adjusting disc is fixedly connected to the first positioning column and the second positioning column, a controllable adjusting rod is spherically hinged to the bottom end of the adjusting disc, a positioning plate capable of being turned over upwards is arranged on the rotary disc, and a positioning mechanism is arranged on the positioning plate; the device is novel in structure, ingenious in conception, convenient to adjust, safe and reliable, the irradiation quality is improved, the situation that parents and medical staff cannot be diagnosed due to the fact that the irradiation quality is affected while the bodies of the parents and the medical staff are prevented from being injured is avoided.