Municipal multifunctional safety warning device

The utility model relates to the technical field of warning equipment, and discloses a municipal multifunctional safety warning device. Comprising a bottom plate, fixing rods are fixedly connected to the two sides of the top of the bottom plate, extension rods are slidably connected to the interiors of the two fixing rods, a warning board is arranged between the two extension rods, a fixing shell is connected to the front faces of the extension rods in a bolted mode, a push rod is arranged in the fixing shell, and a threaded column is driven by a disc to rotate; according to the height-adjustable billboard disclosed by the invention, the height of the billboard can be adjusted, then a threaded sleeve rod can drive a fixed plate to rise upwards under the cooperative use of a rotating disc and a rotating disc groove, and finally, an extension rod can slide upwards in a fixed rod under the cooperative use of a sliding block and a sliding groove; therefore, when the safety warning device is placed on a constructi