Bridge and improved guardrail structure thereof

The utility model relates to a bridge and an improved guardrail structure thereof, the improved guardrail structure comprises a base and a main body, and the base is the bottom end of the original guardrail structure; the main body comprises an inner mold and newly-built concrete, the inner mold is of a hollow structure and is arranged on the base, the weight of the inner mold is lower than that of the concrete with the same volume, the newly-built concrete is poured on the outer surface of the inner mold, and the height of the newly-built concrete relative to the bridge floor is higher than that of the original guardrail structure relative to the bridge floor. The bottom end of the original guardrail structure serves as a base of the improved guardrail structure, and reliability and safety of connection between the improved guardrail structure and the bridge are guaranteed. The weight of the inner mold of the hollow structure is lower than that of the same-volume concrete, so that the weight of the main body