Golden thread grass is clinically used to treat coughing blood, vomiting blood, blood in stool, hematochezia, and diarrhea. Golden thread grass is a member of the Polygonaceae family, which has the effect of cooling the blood to stop bleeding (cooling and moisturizing the blood, preventing bleeding), clearing heat and inducing dampness (removing heat and dampness in the body), dispersing blood stasis and relieving pain. It is often used in coughing blood, vomiting blood, blood in stool, hematochezia, diarrhea, dysentery, stomach pain, abdominal pain during menstruation, postpartum blood stasis and abdominal pain, bruises, rheumatism paralysis, scrofula (mainly refers to cervical lymph node nodules tuberculosis), carbuncles and swellings. At present, its adverse reactions have not been clarified; note that those who are allergic to Qianqiang are prohibited from taking it. Nursing women, children and the elderly and infirm should always consult a doctor before using Goldenseal. Patients who are unwell are advised to consult a doctor in time, and need to use the drug reasonably after identification by traditional Chinese medicine practitioners.