The scientific name of Achyranthes bidentata is Cyathula officinalis Kuan. It belongs to the same family as Achyranthes bidentata, but different genera have different species. The main differences are as follows: the inflorescence of Achyranthes bidentata is long spike, which is harvested in one year, and the inflorescence of Achyranthes bidentata is round head, which is harvested in 3 ~ 4 years after planting; Cyathula likes warm, cool and humid climate, and is mainly produced in Sichuan. It is often cultivated in mountainous areas with an altitude of1200 ~ 2400 meters. It snows for 3 ~ 4 months in winter, and the average precipitation is above1500mm. It grows well in the area around1500m, and it can't be planted in the open field in winter. Achyranthes bidentata is mainly produced in Henan province, and is generally planted in plain or hilly areas, which is warm and not cold-resistant.