To simply provide a water-stopping structures for shielded electric wire in the shielded portion of the wire at a low cost, a water stop structure in a shielded electric wire is comprised by stripping a sheath 4 of the shielded electric wire in the middle part thereof; permeating an adhesive into the exposed shield member 3; overlaying a heat shrinkable tube 12 over the shield member via hot melt14; and heat shrinking the heat shrinkable tube 12 in a state where both ends of the heat shrinkable tube 12 are overlapped with the outer periphery of the sheath 4.