To provide a washing bag which enables washing of clothing free of shape collapse by inserting and fixing an inside bag which excels in liquid absorbing, liquid retaining, liquid removing and quick drying properties and is integrally and tightly adherable to the clothing therein without any odd feel at the time the bag is immersed in liquid in superposition with the clothing into a mesh-like outside bag which is hardly tightly adherable to the clothing in liquid.

Net waves of synthetic fibers, such as nylon, polyester and acryl, or natural materials or their blending are used as the material of the outside bag 3. The materials which excel in the liquid absorbing, liquid retaining, liquid removing and quick drying, liquid permeable and air permeable properties, are strong to kink, friction and tension in the liquid and are integrally and tightly adherable to the clothing without the odd feel at the time the bag is immersed in liquid in superposition with the clothing are used as the material of the inside bag 2. Such inside bag 2 is inserted and fixed to the outside bag 3, by which the washing bag 1 of a double structure is obtd. Such washing bag 1 is provided with an inlet/outlet port 4 which is freely operable and closable by fasteners or the like on one side. The approximately flatly shaped clothing is housed from the port into the washing bag and is subjected to washing.