Nan-Young Kim*, Young-Sug Kim, Myung-Gil Kim, Hong-Rae Jung, Yun-Sung Kim, Han-Taek Kim, Sun-Woo Lee, Kyeng-Suk Chae and Mi-Hye YoonAnyang Agricultural Products Inspection Center, Gyeonggi-do Institute of Health & EnvironmentWe analysed 149 samples of Korean traditional herbal tea materials. The 156 pesticides were analyzed by GC/ECD and NPD, detected pesticides were confirmed by GC-TOF/MS. Sample preparation was performed bv multi-residue analysis method of multiclass pesticides of the Korea Food Code. The residual pesticides were detected in 22 samples(14.8%), the highest detection frequency samples are lycium and jujube. Detected pesticides in Korean traditional herbal tea materials were chlorpyrifos (5 samples), chlorothalonil (3 samples), cypermethrin (3 samples), hexaconazol (3 samples) and cyhalothrin(3 samples). The pesticide types detected in Korean traditional herbal tea materials were organophosphorus(29.2%), pyrethroids(16.7%), organochlorines (12.5%) and triazoles(12.5%). The 5 samples(lycium, jujube, chrysanthemum, balloon-flower, milk vetch root) were detected pesticides below MRLs, 2 samples(cornus fruit, cnidium) were detected pesticides unnotificated MRLs. Key words herbal tea, herbal medicine, GC-ECD, GC-NPDAbstract