The invention provides a damping device and a carrying trolley using the damping device. The damping device comprises a supporting device and a trolley supporting frame. The middle portion of the trolley supporting frame is rotationally connected with the supporting device through a connecting piece. The two ends of the trolley supporting frame are connected with the two ends of the supporting device through obliquely-arranged spring mechanisms. The damping device is provided with two obliquely-arranged springs. If the damping device is accelerated or decelerated or tends to stop from motion or tends to motion from stop, under the effect of inertia force, one obliquely-arranged spring releases pressure to be lengthened, and the other obliquely-arranged spring bears pressure to be compressed, so that a carrying table of the carrying trolley provided with the damping device is kept in the horizontal plane all the time, a buffering effect is achieved, and the stability of the carrying trolley provided with the damping device is improved.