Herbs that lower blood pressure are often bitter and cold in nature and can be attributed to the liver meridian, the most commonly used include chrysanthemum, mulberry leaf, wolfberry, and acacia flower. Chrysanthemum is mainly sweet, bitter and cold in nature, and it can calm the liver and clear the eyes, clear heat and detoxify the body. Mulberry leaf is also on the bitter, cold side, which can disperse wind-heat to clear the liver and brighten the eyes. Chinese wolfberry nourishes the liver and kidneys to achieve the effect of lowering blood pressure, and acacia flower is also bitter and cold, which can play a role in clearing liver fire and cooling blood to stop bleeding. In addition, the clinical treatment of hypertension is often combined with drugs, including asparagus, Pueraria Mirifica, hooked vine or water hyacinth and so on. The clinical treatment of hypertension with herbs should be based on evidence. In addition, when the blood pressure cannot be controlled by herbs alone, it must be combined with western medicine for antihypertensive treatment.