The invention provides a municipal warning sign high in warning capability. The municipal warning sign comprises a warning sign body, a warning mark is fixedly installed in the middle of the outer surface of the warning sign body, red LED lamp beads are fixedly installed on the outer surface of the warning sign body, a shell is welded to the rear side of the warning sign body, a storage battery isfixedly installed in the shell, a first support column is welded to the bottom of the warning sign body, a second support column is welded to the bottom of the first support column, a support platform is fixedly installed at the bottom of the second support column, grooves are formed in the two sides of the bottom of the support platform and internally provided with support rods, and rolling wheels are hinged to the bottoms of the support rods. According to the municipal warning sign high in warning capability, the storage battery is electrically connected with the red LED lamp beads so thatthe red LED lamp beads can emit light to make the warning sign body capable of emitting light sources under the condition of low visibility; thus, the warning effect of the warning sign body is more excellent, the travel safety of pedestrians and drivers is improved, and the occurrence probability of accidents is reduced.