Wide dyed flannelette processing method

The invention discloses a wide dyed flannelette processing method. The wide dyed flannelette processing method comprises gray fabric weaving and dyeing and finishing, wherein gray fabric weaving comprises performing weaving on an air-jet loom and sequentially performing processes of warping, warp sizing, drawing-in, reeding, dropper penetrating, weft twist setting and weft insertion weaving to obtain a gray fabric, wherein the processes of weft twist setting and weft insertion weaving are implemented synchronously; during the process of weft twist setting, the yarn supply side of the weft insertion system of the air-jet loom is additionally provided with a yarn twist setting device; during weaving, weft yarns pass through the yarn twist setting device and then enter into sheds, and the yarn twist setting device spray sizing agent onto the head ends of the weft yarns. During wide fabric weaving, the weft yarns pass through the twist setting device and then enter into the sheds, and by spraying the sizing agent onto the head ends 25-20 mm long of the weft yarns, the head ends of the weft yarns can maintain stable twist and be less prone to untwisting, thereby avoiding affecting the hand feeling or other indexes of the woven fabric; after being sanded and dyed, the fabric can be uniform in color between the edge and the middle and high in sense of quality.