The invention discloses a traditional Chinese medicine composition for reducing blood pressure. The traditional Chinese medicine composition is prepared from, by weight, 6-10 parts of buckwheat leaves, 8-12 parts of broad bean flowers, 6-9 parts of dried lotus leaves, 5-8 parts of sanchi flowers, 7-10 parts of water chestnuts, 4-6 parts of golden cypress, 5-7 parts of plumbagol, 4-6 parts of xylaria nigripes, 3-5 parts of radix polygonati officinalis, 5-7 parts of eucommia ulmoides, 6-8 parts of Chinese hawthorn leaves, 5-7 parts of plantain peels, 4-6 parts of rhizoma gastrodiae, 3-5 parts of yellow loosestrife, 4-6 parts of honeysuckle stems, 2-4 parts of crotalaria-assamica roots, 3-5 parts of fermented smoked plums, 1-3 parts of sunflower seed oil, 3-5 parts of shaddock peels, 4-6 parts of salicornia bigelovii, 0.5-1 part of calendula, 1-2 parts of rhizoma zingiberis and 1-3 parts of honey. The traditional Chinese medicine composition is reasonable in formula, wide in medicine resource and low in cost, and has the effects of cooling blood, reducing blood pressure, clearing away heat, calming the liver, nourishing yin to moisten dryness, promoting urine, relaxing the bowels, soothing the nerves and stopping pain, symptoms such as dizziness, headaches, giddiness, tinnitus, amnesia, palpitation, shortness of breath, insomnia and inattention caused by high blood pressure can be rapidly eliminated, the treatment course is short, effect taking is quick, pressure reduction is stable, and the traditional Chinese medicine composition is suitable for vast high-blood-pressure patients.