The effectiveness of cassia seeds for constipation varies, depending on the individual’s dietary structure, activity level and medication, ranging from 1-2 days to 5-10 days. Cassia seeds is a common Chinese medicine with the effect of clearing the liver and eyes, and inducing diuresis, mainly used for hypertension, hyperlipidemia and as an adjunct to laxative treatment. Since the drug has a slow diarrheal effect, patients using cassia seeds for laxative purposes should firstly improve their dietary structure, such as a high dietary fiber diet, a light diet, and prohibit smoking, alcohol, and spices; secondly, they should increase their daily activities to promote intestinal peristalsis and speed up defecation; finally, patients with severe constipation should use cassia seeds in combination with other laxative drugs, such as aloe preparations and senna preparations. In addition, patients using cassia need to pay attention to the low blood pressure is not easy to use, weak, such as long-term diet, gastrointestinal surgery can not be taken; and cassia has contraction of uterine smooth muscle, pregnant women can not be used.