A molding method mostly suitable for molding highly accurate and high quality products by increasing transferability and reducing deformation. The molding method for forming the products of specified shapes by filling a resin material in cavities formed in a mold and pressurizing the resin material comprises the steps of preparing the mold having a product cavity for molding a resin product, a dummy cavity for molding a dummy product, and a runner for communicating the product cavity to the dummy cavity, filling the resin material in the product cavity, feeding the resin material to at least a part of the dummy cavity, and applying ultrasonic vibration to the resin material in the dummy cavity in a prescribed timing.