The invention discloses a traditional Chinese medicine formula for eliminating skin erythema and scales. The traditional Chinese medicine formula comprises 5-15 parts of concha margaritiferallsta, 5-20 parts of oysters, 5-10 parts of tortoise plastrons, 3-18 parts of pangolins, 2-16 parts of red paeonia, 5-18 parts of peach kernels, 4-16 parts of zaocys dhumnade, 10-30 parts of liquorice, red flowers, periostracum cicada and ligusticum wallichii, wherein Wangyedi liquorice is selected as liquorice. The traditional Chinese medicine formula disclosed by the invention is free from untoward effect in a use process and has an obvious effect on treating psoriasis; the selected drugs have no toxic or side effect to each other; the traditional Chinese medicine formula is suitable for both mild and serious psoriasis patients; the application scope is wide; and the traditional Chinese medicine formula can eliminate skin erythema and scales, so that the internal heat of the body can be eliminated and the mental state can be improved.