To provide a water-soluble laminated film which has a good water solubility while keeping a constant water resistance, and maintains a good interlayer adhesive strength even if it is exposed under the condition of high temperature and wettability at 40°C or so.

A water-soluble laminated film features that a sheet-type fiber is stacked on one surface of a water-soluble resin film, a water-soluble resin is applied on the sheet-type fiber over a coated area of 5 to 80%, and the applied water-soluble resin in the coated area is impregnated into the sheet-type fiber.