Device for filling and emptying wooden wine barrels comprising a tubular body shaped like a cane, which comprises: a first tubular part with a first inlet and outlet connection arrangement at its upper end; an elbow tubular part, following said first tubular part a straight tubular part, following said elbow tubular part, the lower end of which has a first connection arrangement; a frustoconical piece, covered with a film with sealing properties, arranged solidly around the straight tubular part, near to the elbow-shaped tubular part; an extension tubular piece, the upper end of which has a second connection arrangement, suitable for connection to said first connection arrangement; wherein the device for filling and emptying wooden wine barrels may also comprise an intermediate tubular extension piece, the upper end of which has a third connection arrangement, suitable for being connected to the first connection arrangement and a fourth connection arrangement, suitable for be connected to the second connection arrangement; characterized in that said tubular body comprises a tubular piece of smaller diameter than the straight tubular part, wherein said tubular piece internally connects a first hole, arranged in the wall of the straight tubular part below the frustoconical piece and a second hole, arranged above the frustoconical piece, said tubular piece extending outwards and whose outer end has a second input and output connection arrangement and in that the extension tubular piece has a bottom wall at its lower end, which has a threaded hole in its centre, which serves as support for a movable stop, whose threaded rod is arranged to move in said threaded hole, and also being arranged in a side wall of the extension tubular piece near to said lower end at least one third hole. a first tubular part with a first inlet and outlet connection arrangement at its upper end; an elbow tubular part, following said first tubular part a straight tubular part, following said elbow tubular part, the lower end of which has a first connection arrangement; a frustoconical piece, covered with a film with sealing properties, arranged solidly around the straight tubular part, near to the elbow-shaped tubular part; an extension tubular piece, the upper end of which has a second connection arrangement, suitable for connection to said first connection arrangement; wherein the device for filling and emptying wooden wine barrels may also comprise an intermediate tubular extension piece, the upper end of which has a third connection arrangement, suitable for being connected to the first connection arrangement and a fourth connection arrangement, suitable for be connected to the second connection arrangement; characterized in that said tubular body comprises a tubular piece of smaller diameter than the straight tubular part, wherein said tubular piece internally connects a first hole, arranged in the wall of the straight tubular part below the frustoconical piece and a second hole, arranged above the frustoconical piece, said tubular piece extending outwards and whose outer end has a second input and output connection arrangement and in that the extension tubular piece has a bottom wall at its lower end, which has a threaded hole in its centre, which serves as support for a movable stop, whose threaded rod is arranged to move in said threaded hole, and also being arranged in a side wall of the extension tubular piece near to said lower end at least one third hole.