The invention relates to a traditional Chinese medicine composition for treating hypertension. The traditional Chinese medicine composition is composed of the following traditional Chinese medicine raw materials in parts by weight: 5-20 parts of cassia twig, 5-25 parts of gastrodia elata, 5-20 parts of baked ginger, 5-25 parts of scutellaria baicalensis, 10-30 parts of bighead atractylodes rhizome, 5-25 parts of angelica, 5-20 parts of uncaria, 10-40 parts of astragalus root, 5-25 parts of poria, 5-20 parts of corktree, 5-20 parts of nutmeg, 5-20 parts of common fennel, 5-25 parts of radix paeoniae alba, 10-30 parts of dangshen, 5-25 parts of eucommia, 5-20 parts of donkey-hide gelatin and 5-15 parts of licorice. The traditional Chinese medicine composition provided by the invention has the effects of clearing heat, calming liver, promoting blood circulation to remove blood stasis, warming the channels, freeing the vessels and tonifying middle-Jiao and Qi, and the traditional Chinese medicine composition is significant in curative effect on hypertension, reliable in function, wide in component medicine source, simple and convenient to prepare and free of toxic and side effect.