The effects of cassia seeds in water are mainly to clear heat and brighten the eyes, laxative and laxative. It can be used clinically to treat redness and swelling of the eyes, dimming of vision, headache, vertigo, intestinal dryness, constipation, and headache and vertigo caused by hyperactivity of liver yang and inflammation of liver fire. Modern pharmacological studies have shown that cassia seeds also have very good effects on lowering blood pressure, improving vascular tension and relieving vascular spasm. However, cassia seeds are cold in nature, if taken for a long time, the body will appear cold body, and there is also the possibility that it may trigger the aggravation of dampness, which can damage the body.