This study inves51tigated the changes in the physicochemical characteristics and sensory evaluation of Aster scaber by blanching treatment time. Aster scaber was blanched with 100℃ hot water for 1~5 min. At 100℃ blanching, the total polyphenol contents of the sample blanched for 1~5 min ranged from 7.57 to 6.45% while the sample blanched for 5 min showed a severe loss of phenolic compounds. The sample blanched at 100℃ for 5 min had the lowest L* and b* values (24.96 and 16.14, respectively) and the highest a* value (-10.39) among all the samples. With regard to the texture profile, the sample blanched at 100℃ for 5 min was the highest in texture. Significant reductions in the texture, color, and total phenol content were observed after blanching. In the sensory evaluation, the Aster scaber sample blanched with hot water at 100℃ for 2 min showed the highest color, appearance, and flavor while the sample heated with boiling water for 3 min had the highest sensory score in terms of texture and overall acceptability. In conclusion, the 3 min blanching of Aster scaber yielded the best sensory quality.