Achyranthes plant is a perennial herb, 30 to 100cm long. Root is elongate, 0.6 to 1cm in diameter and with earthy yellow skin. Stems are erect, four-angled, striate, sparsely pubescent, and with slightly enlarged node and opposite branches on nodes. Leaves are opposite. Petioles are about 5 to 22mm. Leaf blade is elliptic or elliptic-lanceolate, 2 to 10cm long, 1 to 5cm wide, and with spiky apex, cuneate or broad cuneate base, entire margin, and both pubescent sides. Spica is axillary and apical. Inflorescence is short initially and packed with flowers but stretches later to about 15 to 20cm (including peduncle on the lower part). Utricle is oblong and smooth. Brown seed is 1 only in number. And its flowering period is from July to September and fruiting period is from September to October.