The invention discloses a dental examination supporting device with strong applicability, including seat cushions, the inner cavity of the seat cushion is movably connected with a movable plate, the right side of the movable plate extends to the outside of the seat cushion, the bottom of the seat cushion is movably connected with a vertical bar, the bottom of the vertical bar is sleeved with a sleeve, the bottom of the vertical bar is fixedly connected with a spring, the bottom of the spring is fixedly connected with the bottom of the sleeve inner cavity, the bottom of the sleeve is fixedly connected with a bottom plate, and four corners of the bottom plate are fixedly connected with legs. Through the cooperation of the vertical rod, the spring, the sleeve and the bottom plate, the dentalinspection support device has good shock absorption performance, the invention improves the comfort and is convenient for people to use. The invention is cooperated by the groove, the fixing rod, thesliding sleeve, the connecting block, the electric telescopic rod and the connecting plate, and is convenient to adjust the inclination angle of the leaning plate, to adjust the sleeping posture of the patient, to facilitate the doctor to examine the mouth of the patient, and to improve the applicability of the dental examination support device.