Abstract: A retractable supporting mechanism for a suitcase includes a rod assembly, a retaining bushing assembly and a retaining plate. This supporting mechanism can be readily attached to the main frame of the suitcase and is completely enclosed by a sandwiched pocket having an opening incorporated with a zipper. By this arrangement, the rod assembly can be pulled out to a full extent in use and retracted to a compact position when not in use. The rod assembly is integrally molded and cannot be pulled out from the retaining plate.