The invention relates to a high-temperature environmentally-friendly chemical dyeing technology. The technology comprises preprocessing, pre-setting, dyeing, water washing, soaping, dye fixation, softening, drying, setting and winding. A stepped heating dyeing method is adopted, and the heating and cooling rates and the dyeing time are strictly controlled, so dyeing of a fiber fabric has high fastness, the dyeing is uniform, and the dyeing has good stability; an anti-dyeing salt S is added in the dyeing process, so the destroy of potential aldehyde groups in cellulose molecules in chemical fiber filaments to a dye is greatly improved, thereby a dyed product has pure color light, the color difference of dyeing is avoided, and the reappearance and the stability of the dyeing are good. Chemical fiber filaments finally produced in the invention have the advantages of uniform dyeing, stability, strong recurrence, elasticity, softness and high dyeing fastness.