Abstract: A molding device for molding a sliding member of a slide fastener includes a first mold, a second mold movable toward or away from the first mold to close or open the molding device, at least one set of upper movable moving parts, a first upper stationary molding part detachably fixed to the first mold and a second upper stationary molding part detachably fixed to the second mold. The upper stationary molding parts are replaceable to alter the design of the holding end of a pulling tab of the slide fastener. Each set of the upper movable molding parts includes a first and a second upper movable molding part installed in the first mold, a third and a fourth upper movable molding part in the second mold.