The invention discloses to a traditional Chinese medicine composition for treating acnes and a preparation method thereof. The traditional Chinese medicine composition for treating the acnes is prepared from the following raw materials in parts by weight: cortex lycii radicis, oldenlandia diffusa, stemona, belvedere fruit, fructus cnidii, liquorice, schizonepeta, divaricate saposhnikovia root, chrysanthemum, salviae miltiorrhizae, cape jasmine, scutellaria baicalensis, honeysuckle, turmeric, paris polyphylla, polygonum perfoliatum, Chinese violet, Chinese angelica and spina gleditsiae. The invention also provides a preparation method of the traditional Chinese medicine composition for treating the acnes. The traditional Chinese medicine composition for treating the acnes has definite curative effect, good safety and no side effect in the aspect of treatment on the acnes; meanwhile, the traditional Chinese medicine composition for treating the acnes is easy to use and low in cost, and the effect of the traditional Chinese medicine composition for treating the acnes is better than that of the prior art.