A method for manufacturing a waterproof fastener tape includes the steps of: forming a viscous waterproof layer on a releasable substrate; attaching the viscous waterproof layer formed on the releasable substrate to a fastener tape base fabric, and peeling the releasable substrate off the viscous waterproof layer that has been attached to the fastener tape base fabric; promoting curing of the viscous waterproof layer formed on the fastener tape base fabric to form a reduced-viscosity waterproof layer; and after the promoting of curing of the viscous waterproof layer, covering an exposed surface of the reduced-viscosity waterproof layer formed on the fastener tape base fabric with a releasable cover.