The present invention relates to a road stud comprising: a cylindrical anchor body unit which has an opened upper portion and has an inner accommodation portion; a reflection module which is installed to be movable up and down along the inner portion of the anchor body unit; an elastic member which allows the reflection module to be exposed to the upper portion of the anchor body unit when external force is not applied in the anchor body unit, and allows the reflection module to move into the anchor body unit when external force is applied; an elasticity adjustment module which is installed in the reflection module to adjust a pressurization degree of the elastic member into the anchor body unit; and a coupling bracket which is installed at the upper portion of the anchor body unit and allows the reflection module not to deviate toward the opened upper portion of the anchor body unit.
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