Eczema is a common skin condition. It can occur at any age, in any part of the body, and in any season. The root cause of eczema is the imperfection of the gastrointestinal system. Allergens eaten by certain allergic individuals tend to enter the bloodstream through the thin intestinal wall, and since the capillaries under the skin are the most abundant, eczema immediately manifests itself on the skin. The essence of getting rid of eczema is not to test for allergens from countless substances to avoid it, but to improve the gastrointestinal system. Dietary treatment for eczema 30 grams of mung beans, 20 grams of kelp, 15 grams of fishy grass, and the right amount of sugar. Wash kelp and fishy grass, cook with mung beans, drink soup and eat kelp with mung beans. Take one dose per day for 6~7 doses. Boil 30 grams of barley, 15 grams of red beans and 15 grams of corn beans, cook the three flavors together, drink soup and eat barley and red beans. Take one dose daily for 7~8 doses (damp-heat type). 30 grams of winter melon skin, 30 grams of barley, 15 grams of plantain, the three flavors together after decoction, drink soup, eat barley. Take one dose daily for 7~10 doses (spleen deficiency and dampness type). Mulberry 30 grams, lily 30 grams, jujube 10 pieces, green fruit 9 grams, decoction together. Take one dose daily for 10~15 doses (blood deficiency and wind dryness type).