Xi Cao, alias Sally grass, blood see worry, the ground Sue wood, live blood Dan, soil salvia, red internal elimination and so on. Cissus family plants, perennial climbing herbs, roots several to dozens of clusters, the outer skin of the fruit purplish-red or orange-red, leaves in whorls of four, long-stalked, the shape of the leaf blade varies greatly, ovate, triangular-ovate, broadly ovate to narrowly ovate, the berry globular, red and then turned black, flowering June to September, fruiting in August-October. Born on hillside roadsides, ditch edges, field edges, thickets and forest margins, spring and fall digging. It has the effect of cooling blood, stopping bleeding, activating blood circulation and removing blood stasis. The main treatment of blood fever hemoptysis, postpartum stasis abdominal pain, bruises, rheumatic paralysis and other conditions.