Safety early warning device for urban planning road construction

The invention relates to the technical field of safety early warning devices, and discloses an urban planning road construction safety early warning device which comprises a connecting plate, stable placement mechanisms are arranged at the top and the bottom of the connecting plate, a lifting early warning device is arranged at the top of the connecting plate, and a reinforcing warning device is arranged on the back of the lifting early warning device. According to the safety early warning device for urban planning road construction, when the safety early warning device needs to be placed, a first one-way threaded rod is rotated firstly, a cross threaded block drives a first fixing frame to descend, a second fixing frame lifts universal wheels, the situation that the universal wheels make contact with the ground to affect stability is avoided, a rotating supporting rod is rotated, the contact area with the ground is increased, and the stability is improved; at the moment, a two-way threaded rod is rotated, a