The invention discloses a road guardrail mounting structure for municipal construction, and relates to the technical field of municipal construction. The road guardrail mounting structure comprises a fixed bottom plate and a guardrail, the two ends of the upper side surface of the fixed bottom plate are fixedly connected with supporting columns, the two ends of the lower side of the guardrail are fixedly connected with clamping cylinders, and the guardrail is fixedly connected with first inserting columns in the clamping cylinders; and clamping grooves are formed in the two ends of the upper side surface of the fixed bottom plate, second inserting columns are fixedly connected to the positions, in the clamping grooves, of the fixed bottom plate, the second inserting columns and the first inserting columns are coaxially arranged, first springs are arranged between the clamping cylinders and the first inserting columns, the upper ends of the first springs sleeve the first inserting columns, and the lower ends of the springs sleeve the second inserting columns. According to the device, the guardrail can be in a stable vertical state under the normal condition through the acting force of the first springs, when the guardrail is impacted, the guardrail rotates and inclines, the guardrail beside cannot be affected, and large-area guardrail damage is prevented.