Tie-dyeing method for cashmere textile

The present invention discloses a tie-dyeing method of cassimere. Said method includes the following steps: designing pattern of said cassimere and binding; adopting quick penetrating agent SP-2 and Peregal according to a certain mixing ratio to prepare solution, temperature is 40-70 deg.C, bath ratio is 1:15-20, making treatment for 15-20 min; adopting reactive dyes for wool as raw material, using sodium sulfate powder, glacial acetic acid, dye leveler Albatex B for wool and penetrating agent Albatex FFA for wool as adjuvant, after the temperature is risen to 98 deg.C from 70 deg.C, heat-insulating for 20-60 min, making sectional dyeing, then rinsing and cleaning; adopting 3-5% of cashmere bulking agent, 0.3-1% of glacial acetic acid and 0.2-1% of high-effective penetrating agent to make relaxing-bulking treatment, temperature is 40-50 deg.C and making treatment for 20-30 min to make cassimere be flabby, then making milling treatment.