Lichen planus is a chronic and persistent itchy skin disease, equivalent to neurodermatitis. It is a common chronic skin disease, which seriously endangers the skin health and normal life and work of patients. According to people’s knowledge of rubella and modern medical laboratory tests, it is believed that the following vegetables in the diet of rubella patients are beneficial to patients. Carrots: contain a lot of carotene, which can supplement the lack of vitamin A in the patient’s body. Cabbage: contains carotene, vitamin C and many other ingredients. It is sweet and warm in nature and has the effect of relieving fever and calming the mind. Loofah: It contains protein, sugar, calcium, phosphorus, iron and vitamins. It is sweet and cool in nature, and has the effect of clearing heat and detoxifying. Cucumber: contains sugars, amino acids and B2, C, A and other vitamins. It is sweet and cool in nature, and has the effect of clearing heat and detoxifying and water. White radish: contains carbohydrates, calcium, phosphorus, carotene, vitamin C and other components. It is sweet, pungent and cool in nature, and has the functions of clearing heat and detoxifying and eliminating food. Eggplant: contains protein, carbohydrates, calcium, phosphorus, carotene, vitamin C, etc. It is sweet, cool and non-toxic in nature, and has the functions of activating blood and cooling blood, removing wind and swelling. Cabbage: contains protein, calcium, phosphorus, carotene, vitamin C and B1, B2, etc. It is light, cool, non-toxic, and has the function of clearing heat and detoxifying, resolving blood stasis and eliminating swelling. Other diets: such as soybean sprouts, mung bean sprouts, tofu, spinach, celery, tomatoes, bean curd, etc., all contain protein, calcium, phosphorus, iron, carotene, vitamin C and many other ingredients, all of which can be consumed regularly.