The invention aims to provide a traditional Chinese medicine preparation for lowering blood pressure. The traditional Chinese medicine preparation comprises following raw materials: 45 parts of feather cockscomb seeds, 45 parts of cassia seeds, 36 parts of sophora flower buds, 45 parts of crataegus pinnatifida bunge, 25 parts of wild chrysanthemums, 25 parts of lotus plumules, 30 parts of alisma plantago-aquatica, 30 parts of scutellaria baicalensis, 36 parts of uncaria rhynchophylla and 30 parts of gynostemma pentaphylla. According to the traditional Chinese medicine preparation provided by the invention, the materials are easily available and easy to manufacture; the combined utilization and the synergistic effect of traditional Chinese medicine components are realized; the traditional Chinese medicine preparation has the advantages of convenient utilization, low cost and clear use effects, is economical and practical and has no toxin or harms; the traditional Chinese medicine preparation is mainly used for patients with hypertension. The prepared tea beverage is convenient to drink and an extra decocting step is not needed.