Abstract: A machine is disclosed for the continuous washing of fabric (T), comprising eans (3) for introducing the fabric to be treated into said machine, means (5) for extracting the treated fabric from said machine and, between said means of introduction and said means of extraction, a treatment tank. It comprises at least two fabric treatment tanks (7, 9) arranged in series with respect to the overall direction of advance of the fabric (T) through the machine and, between said at least two tanks (7, 9), means of reversible transfer (11) that transfer said fabric from the first tank (7) to the second tank (9) and back again.