The invention discloses a simple and convenient digital direct-injection printing and dyeing method free of steaming and washing. It includes the following steps: S11. Fabric pretreatment; S12. Digital inkjet printing and dyeing; S13. After the cloth inkjet printing is completed, drying is the printing and dyeing cloth; or, it includes the following steps: S21. Digital inkjet printing and dyeing; , fix the color of the fabric modifier aqueous solution; S23. After the fabric fixation is completed, drying is to print and dye the fabric; the modifier can increase the number of hydroxyl groups in the fabric fibers, and make the hydroxyl groups in the fabric fibers and the fabric fibers. A more stable substance to which the reactive groups in the dye bind. The method of the invention saves the steaming and water washing processes in the traditional process, reduces the treatment and discharge of a large amount of sewage, and completely reaches the standard of zero discharge, which is not only environmentally friendly, but also greatly saves energy consumption and reduces At the same time, the printed and dyed fabrics are fast in color, not easy to fade, and the color is saturated, and the dyeing effect has reached the international export standard.