The effects and functions of earth rhubarb include clearing heat and cooling the blood (to relieve blood heat by clearing heat), subduing swellings and removing blood stasis, and killing insects and treating ringworm. It is usually consumed by decocting the soup and taking it internally. Earth rhubarb is also known as Jin Buhua, Spitting Blood Grass, Blood Sanqi, and Chemical Blood Lotus. It is bitter, pungent and cool in nature, and belongs to the heart and lung meridians. It has the efficacy of clearing away heat and cooling the blood (relieving blood heat by clearing away heat), subduing swelling and removing blood stasis, and killing worms and treating ringworm, and it is generally used to treat hematemesis, canker sores, constipation, scabies, and eczema. Earth rhubarb is not suitable for all groups of people because of its bitter and cold medicinal properties, and its strong attacking power. People with cold spleen and stomach (spleen and stomach weak and cold) or weak bodies should avoid using this medicine. It is not recommended to consume a single medicine for treatment, if you have uncomfortable symptoms, you need to identify the disease under the guidance of a doctor, and other drugs combined with decoction soup for internal use, this drug is allergic to people, pregnant women are prohibited.