According to "Small Cooling Fan" injection mold design process wizard to complete the preliminary design of the injection molding of the project initialization, set the mold coordinate system setting shrinkage, adding molding inserts, cavity layout and other steps. Thereby establishing an injection mold design projects, to ensure that products of the coordinate system is suitable for injection molding design, and follow the "Small Cooling Fan" in molding material given reasonable shrinkage. While adding to generate the mold core and cavity molding inserts. Conduct dual-chamber die layout. "Small Cooling Fan" at the dual-chamber die layout, perform insert molding cavity design so that after joining the mold, through the cavity on the template out of the core and cavity installation slot.