Construction safety protective fence for municipal engineering

The construction safety protective fence for municipal engineering comprises bottom plates, protective fence plates are fixed to the top ends of the outer walls of the two bottom plates, and center frames are arranged on the opposite sides of the two protective fence plates. Adjusting assemblies for adjusting the protective fence plates are arranged at the two ends of the center frame correspondingly, connecting assemblies for connecting the two protective fences are arranged at the ends, away from the center frame, of the protective fence plates correspondingly, and each adjusting assembly comprises a hinged connecting rod; by means of mutual cooperation of the center frame, the two-way screw, the hinged connecting rods and the threaded sliding blocks, the two protective guard plates can be driven to be far away from each other when the device is used, then the unfolding process of the device is achieved, and the device is convenient to use; and meanwhile, after the device is used, the two protective guard p