This research is conducting dyeing process color analysis test mainly on biomass polyamide 6 6.6 and 6.10 dyeing properties. In dyeing experiment, it used acid dyes and modified experiment. with the same dyeing conditions to test different color intensity difference discussion. Comparing acid dyes and activity weakened -NH_2group with -OH group dyes, polyamide 6 and 6.6 color rate are 40%, polyamide 6.10 is 80% which are using acid dyes. In the other hand, using activity weakened -NH_2 with -OH group dyes, polyamide 6 and 6.6 are 30% 6.10 is 50%. In stained result, Modified dyes would not have any dye transferring problems due to changes of groups.