Extensive studies were made for the detection of terpene alcohols, aldehydes, ketones, and lactones by paper electrophoresis. The method is generally available for a rapid test of perfume products and it could be accomplished more rapidly than chromatography on paper by using a current of 500∼8, 000 V, reported previously. The higher the voltage, the sooner the results are obtained in electrophoresis, while a constant time was required in chromatography owing to the constant capillarity of the filter paper itself. One of many electrolytes applied, mercuric chloride, has shown the most satisfactory result and a formation of conjugated carbonyl groups with mercuric ion was presumed.