Salt-free low-alkali cellulose fiber modified dyeing process

The invention relates to a salt-free low-alkali cellulose fiber modified dyeing process, belonging to the technical field of textile dyeing. The dyeing process comprises the steps of cellulose fiber modification treatment, water washing treatment, dyeing and after-treatment, wherein in the step of cellulose fiber modification treatment, an azetidine cationic compound and polyamide polyamine epichlorohydrin are adopted for modification treatment of cellulose fibers. The salt-free low-alkali cellulose fiber modified dyeing process has the beneficial technical effects that two kinds of specific modifiers are adopted, the synergistic effects of the modifiers are given play to and the specific dyeing steps are provided, so that salt-free low-alkali dyeing of the cellulose fibers is achieved, pollution is reduced, the cost is saved, the process is simplified, the difficulty is reduced, and the modification and dyeing effects are good; therefore the dyeing process is suitable for large-scale industrial production.