The invention discloses digital printing active dye jet ink, comprising the following ingredients in percentage by weight: 1.0-20% of active dye, 10-40% of viscosity regulator, 0.2-2% of surface tension regulator, 0.1-3.0% of pH value control agent, 0.3-1.5% of sterilizer and the balance of de-ionized water. The digital printing active dye jet ink provided by the invention is suitable for printing and dyeing textiles, such as real silk, pure cotton, numb, viscose and mixed fiber thereof, and especially has the advantages of better chromaticity, color fastness and color repeatability on wool textiles.