Eczema is known as “wet sores” in Chinese medicine, and Amaranthus can be used to treat wet sores by clearing heat and removing toxins and cooling the blood to stop bleeding. The dried above-ground parts of the plant Amaranthus can be used as medicine, with a sour flavor and cold nature. Because it has the effect of clearing heat and removing toxins, cooling the blood to stop bleeding and stopping dysentery, it can be used for the treatment of feverish blood dysentery (dysentery caused by feeling heat and venom, and seeing blood in the stool), carbuncle furuncle, eczema, dengtoxin (an acute infectious disease, which can be seen in the skin as red as paint), snake and insect bites, blood in the stool, hemorrhoidal blood, and other medical conditions. Applying mashed amaranth externally to the affected area can treat wet sores. However, it should not be used by people with cold spleen and stomach and intestinal slippage and diarrhea. In addition to the use of amaranth, wet sores can also be treated with Chinese herbs such as cypress and bitter ginseng, but it is not advisable to use bitter ginseng together with quatrefoil, and cypress is not recommended for people with a weak and cold spleen and stomach. The use of traditional Chinese medicine for the treatment of eczema, the use of drugs should follow the doctor’s instructions, do not blindly take on their own, the combination of drugs and dosage should not be arbitrarily changed.