Humulus japonicus(HJ) is an annual plant and a vine plant. It is distributed mainly in Korea and East Asia, and it is mainly used for skin diseases in Korean folk remedies. HJ are killed by winding other plants with vines and have strong fertility. Therefore, it is classified as a harmful plant which is disturbing the ecosystem. To make the utilization, one of the methods for removing this plant, the antioxidant capacity of HJ was verified.