The invention belongs to the field of traditional Chinese medicine and relates to a traditional Chinese medicine composition containing ginkgo leaf and used for treating eczema and a preparation method thereof. The traditional Chinese medicine composition is prepared from, by weight parts, 10-20 parts of ginkgo leaf, 9-12 parts of artemisia anomala, 5-12 parts of caulis spatholobi, 3-10 parts of tree peony bark, 3-10 parts of fructus cnidii, 3-10 parts of rhubarb, 3-10 parts of fructus kochiae, 3-6 parts of radix stephaniae tetrandrae, 3-6 parts of coriolus versicolor, 1-5 parts of fructus evodiae, 3-9 parts of fructus lycii and 1-10 parts of radix glycyrrhizae. Natural traditional Chinese medicines are adopted, and the traditional Chinese medicine composition is simple in composition, rational in ratio, small in toxic and side effect and convenient to use, has effects of promoting blood circulation to remove meridian obstruction, inducing dieresis, excreting dampness and clearing heat and removing toxicity, can effectively treat acute eczema and chronic eczema.