Chamomile is a perennial herbaceous plant in the Asteraceae family. The stem is densely covered with soft hairs, and the lower part of the hairs gradually become sparse to hairless; The leaves are large and thin in texture, with no or almost no hair on both sides; The basal and middle stem leaves are diamond shaped, fan-shaped, or nearly kidney shaped, with green or light green on both sides, and are divided into two palmar or palmar feather shapes; The bracts are shallow disc-shaped, with four layers of brown or black brown broad membranous edges on the bracts, and the outer layer is linear, elongated elliptical or ovate; The achene is about 2 millimeters long; The flowering and fruiting period is from June to August.