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Bangah (Agastache rugosa 0. Kuntze), one of the wild plant grown in Korea and used for deodorizing some of the fish foods because it´s strong and unique flavor, was determined for chemical composition in leaf, flower and stem. The highest protein content of 14.7% was found in leaf and lipids was in the range of 5.25∼7.74%. Total sugar content in leaf and flower were 27.53% and 14.86%, reducing sugar content were 11.80% and 2.75%, respectively. Fifteen fatty acids in bangah were identified and the major fatty acids were linolenic, palmitic, lauric and linoleic acids. Seventeen total amino acids were determined in leaf and flower. Glutamic acid, aspartic acid and leucine were high in each portion. The major free amino acids were histidine, serine, proline and glutamic acid. Most of minerals were high in leaf and flower than those in stem of bangah except for Ca and Fe. Especially K was higher in leaf and flower than stem by 4 times.
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