To provide a method for producing a content-removing device which generates a fatal short mold in entire content-removing device and solves the problem of the moldability of a support flange and the content-removing device.

The content-removing device which is approximately in the shape of a straw and has a spout, a conduit, a pair of joining parts protruding horizontally at the upper end of the conduit, and a flange at the upper end of the conduit in contact with the upper ends of the joining parts is made to correspond to a position corresponding to the flange at the upper end of the conduit of a cavity, and the gate of a mold is arranged. A molten resin is injected from the gate into the cavity and molded. In the content-removing device produced by the method, the flange at the upper end of the conduit has a recess in its part. The trace of the gate of a height not protruding from the recess is formed in the recess.

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