Schizonepeta tenuifolia is an annual herb, 60 to 100cm in height. It is with a strong aroma. Erect stems are, four-angled, and with branches on the upper part and brownish purple base. Whole plant is covered with off-white pubescence. Leaves are opposite. Flowers are verticillaster and multiple rings gather on the top of branch and form the 3 to 13cm spike. Flowers are small and with funnel-shaped calyx and reddish purple crown. Nutlets are 4, tan, oblong-prismatic, about 1.5mm long, about 0.7mm in diameter, and with smooth surface. Bloom time is from July to September and fruit time is from September to November. Habitats include hillside, roadside, and valley at the altitude between 540 to 2700m. Most are cultivated but some grows in the wild. The above-ground parts, spike, and stems contain volatile oil 1.12%, 1.69%, and 0.60% respectively, schizoneptoside, schizonol, flavonoids, etc.