The utility model discloses a reinforced structure of an arched framework of a roadbed slope. The reinforced structure comprises an inner mold and an outer mold, wherein the inner mold and the outer mold are arched and are parallel to each other; H-shaped supporting frames are distributed in the circumferential direction of a curved surface encircled by the inner mold and the outer mold and are propped against the inner wall of the inner mold and the outer wall of the outer mold respectively to support and fix the inner mold and the outer mold; an outer edge mold plate is embedded onto the inner mold; a main body part of the outer edge mold plate is positioned between the inner mold and the outer mold. The reinforced structure of the arched framework of the roadbed slope has the advantages of simple and novel structure, high convenience in mounting and good supporting effect; the defects of mold shifting, framework exposure, surface pitting, lacking of edges and corners and the like can be overcome, the safe civilized site construction image can be promoted, the outer edge of the arched framework can be molded by one-time pouring, the shortening of the construction period is facilitated, and the construction cost is reduced.