A guide rail for a road of the present invention comprises: a support part fixated by an anchor bolt on the road; a connection part having a lower part fixated by a nut by being penetrated by the support part; an erecting part installed in an upper part of the support part by being combined to an outer circumference of the connection part; a main part penetrated by the connection part, pressurizing the erecting part; and a plurality of sub parts which are linked to the connection part, and are stacked on the main part. The guide rail maintains an erecting state vertically standing on the road since a sub part located on the uppermost part among the plurality of sub parts stacked is fixated to an upper part of the connection part while pressurizing the erecting part by the main part.
