Scurvy grass is slightly cold in nature, pungent and bitter in taste, and belongs to the stomach, large intestine and liver meridians. It is effective in clearing heat and removing toxins (removing heat and toxins from the body), eliminating canker sores and draining pus (eliminating canker sores and draining pus), and dispelling stasis and relieving pain (dispelling stasis of blood to relieve pain). It is hard and slightly cold, can clear heat and detoxify, eliminate carbuncle and drain pus. It is suitable for both internal and external carbuncles, and is especially good at treating internal carbuncles. Because it enters the large intestine meridian, it is the key medicine for the treatment of intestinal carbuncle (carbuncle occurring in the intestines and bowels, manifested by fever, pain in the right abdomen and palpable lumps). It can be used with safflower, angelica and rhizoma ligustici to treat postpartum diseases, and can be used with safflower, angelica and rhizoma ligustici. It is cold in nature and enters the liver meridian, and can also be used for liver fever, red eyes and swelling pain. The adverse effects of Scrophularia are not known. It is contraindicated for those with weak spleen and stomach, and those with poor appetite and diarrhea. The drug must be used under the guidance of a doctor, not blindly self-medication.