Cassia seed chrysanthemum tea on primary hypertension has auxiliary antihypertensive effect, but can not be used as the main treatment for lowering blood pressure. Hypertension is divided into primary hypertension and secondary hypertension. Primary hypertension is a common type of hypertension with unclear etiology; secondary hypertension is often secondary to other diseases with clear etiology, such as renal hypertension, renal tumors, acute and chronic glomerulonephritis, etc. Secondary hypertension needs to be treated actively to control the blood pressure of the primary disease. Cassia has the function of clearing the liver and improving eyesight (clearing liver fire to promote vision recovery), laxative, and can be used to treat vertigo, headache, glaucoma, acute conjunctivitis and other diseases. Chrysanthemum has the effects of dispersing wind-heat, clearing liver fire and brightening eyesight, and calming liver yang. It is often used for wind-heat colds, headache and dizziness, high blood pressure due to exuberant liver fire, and unclear vision. Cassia seed chrysanthemum tea has a certain effect on lowering blood pressure, but not a substitute for medication, people suffering from hypertension symptoms should go to the hospital in a timely manner, according to the doctor’s instructions to take medication. Caution should be exercised for people with cold spleen and stomach (weak and cold spleen and stomach), and those who have little food and diarrhea.