It is the whole grass of compositae plant Anoplophora japonicus. Bitter and warm. Entering the heart and spleen meridian. Functions: breaking blood, dredging channels, healing sores and reducing swelling. Indications: amenorrhea, abdominal distension and abdominal pain, postpartum blood stasis, traumatic injury, bedsore bleeding, carbuncle swelling and toxic swelling. Oral administration: decoction, 3 ~10g; Or turned into powder. External use: tamping or grinding.