Guardrail support suitable for bridge reinforcing construction

The utility model discloses a guardrail support suitable for bridge reinforcing construction, which comprises a left support group and a right support group which are symmetrically arranged on guardrails on two sides of a bridge body, the left support group and the right support group respectively comprise at least two groups of supports, and the adjacent supports are connected through connecting rods; the support comprises an inner side rod and an outer side rod, the upper ends of the inner side rod and the outer side rod are connected into a whole through a horizontal rod, a sliding wheel sliding relative to the upper end face of the guardrail is installed on the lower end face of the horizontal rod, and a hanging ring is arranged on the lower side, opposite to the guardrail, of the outer side rod. The horizontal rods comprise the first horizontal rod and the second horizontal rod, screw holes are formed in the first horizontal rod and the second horizontal rod in the thickness direction of the guardrail, a