Sappanwood is well known to dye red fabrics in history. It has a high artistic value and application value.Traditional Sappanwood dyeing of silk is influenced by certain factors. The influence rule of dyeing parameters on dyeing chromatography was studied by hot water extraction of Sappanwood dye liquor. And the key factors were analyzed by the single factor experiment. The results show that the dye concentration,the dyeing duration,the p H value,the mordant type and concentration as well as the mordant dye...