Amaranth can be used to treat eczema, boiling water can get rid of eczema to a certain extent, but it should be combined with other medicines under the guidance of a doctor for comprehensive treatment. Amaranth has a sour taste and cold nature, it is a kind of traditional Chinese medicine, it has the effect of clearing heat and detoxification (removing heat and poisonous evil from the body), cooling the blood and stopping bleeding (cooling and moistening the blood and preventing bleeding), and stopping dysentery. The medicine is used to treat heat-poisoned blood dysentery (dysentery caused by feeling heat and poison, and seeing blood in the stool), carbuncle boils (sores mostly occurring on the limbs or face, with small shapes and deep roots that are as hard as nails), eczema, dengteng (acute infections that can be seen as reddening of the skin as if it had been coated with pigment), snake and insect bites, blood in the stools, blood in the hemorrhoids, blood in the discharge (menstrual bleeding that is excessive or dripping). The adverse effects of Ma Yao Yao are not clear for the time being. It is prohibited for patients with spleen and stomach deficiency (weak and cold spleen and stomach), and should not be used by people with intestinal slippage for diarrhea. The drug can be used internally and externally, and it is recommended that the method of use be decided by a professional Chinese medicine practitioner according to the patient’s condition. When using the medicine for treatment, it is necessary to be guided by a Chinese medicine practitioner to use the medicine according to the evidence, and do not use the medicine arbitrarily, so as to avoid adverse consequences or delays in the condition.