Salvia miltiorrhiza Bunge is a perennial herb, 30 to 100cm high. The whole plant is covered with dense yellowish pubescence and glandular hairs. Roots are long, thin, cylindrical, and covered with earthy red skin. Stems have four prisms and branch on upper part. Leaves are opposite and with odd pinnate. Small leaves are from ovate to broadly ovate and both surfaces are covered densely with white pubescence. It blooms in summer. The inflorescence is terminal and axillary verticillaster, with 3 to 10 flower each round and an alienated raceme arranged by many rounds of flowers. Nutlets are oblong, dark brown or black when ripe, and wrapped in persistent calyx.