Urban road quality dynamic monitoring device

The invention provides an urban road quality dynamic monitoring device, and relates to the technical field of road state detection. The urban road quality dynamic monitoring device comprises a mounting plate, the bottom end of the mounting plate is fixedly connected with a detection mechanism, the detection mechanism comprises a detection box, and the bottom end of the detection box is fixedly connected with at least four box bodies. Detection wheels can move along with the movement of a vehicle body when making contact with the ground, then a rotating rod is matched with a lifting plate to enable a supporting plate to slide in a lifting groove, a detection rod is made to move upwards, the movement track of the detection rod is photographed through a detection photographing device, and meanwhile the movement track is displayed on a screen through a wireless transmitting module; and under the action of the motor, the threaded rod drives the sliding block to slide, the bottom of the road is detected through the