Abstract: This machine for wet treatment, for example dyeing, for textile materials, comprises a horizontally elongate vat, in which is formed a zone for the storage in folds of the fabric to be treated, which forms a rope closed on itself. A hydraulic and/or mechanical system for driving the fabric is placed at the start of a transport tube provided for returning the fabric from the front end of the vat toward the rear end of the latter. A system for injecting a gas stream, for example air, in contact with the fabric is provided within the vat; the system is located, in the direction of travel of the fabric, between the point where this fabric returns to the storage zone and the hydraulic system. This system spreads and dries the fabric. The invention is used for the fault-free dyeing of fabrics composed of modern fibers.