The difference between rhubarb and rhubarb is mainly due to the difference in flavor, efficacy and symptoms. 1. Different flavors: rhubarb is bitter and cold in nature, entering the spleen, stomach, large intestine, pericardium and liver meridians. The earth rhubarb is pungent and bitter, cool in nature, and enters the lung and large intestine meridians. 2. Different efficacy: rhubarb is mainly diarrhea and attack the accumulation of heat and fire (to remove heat and fire in the body), cool the blood and detoxify the toxin (refers to the treatment of blood heat and toxicity), expel blood stasis and pass through the menstruation (to remove blood stasis and dredge the meridians), and diuresis to remove the yellow efficacy. The efficacy of Rhubarb is mainly in clearing heat and removing toxins (removing heat and toxins from the body), cooling blood and stopping bleeding (cooling and moisturizing the blood and preventing bleeding), laxative, and killing worms. 3. Different indications: rhubarb is often used in the treatment of constipation, sore throat, blood stasis, etc. It can also be used externally for the treatment of burns, feverish sores and ulcers. Earth rhubarb is mainly used for the treatment of carbuncle, hemoptysis, vomiting blood, acute and chronic hepatitis and other diseases, external use can be used to treat scabies, eczema, dermatitis and other diseases. To summarize, the difference between the two medicinal use is still large, it is recommended that patients in the guidance of a professional doctor to use correctly, do not blindly use their own medication.