Cassia seeds, as a common Chinese herbal medicine, the benefits are laxative, clearing heat and improving eyesight (removing heat from the body and promoting vision recovery); the disadvantage is that there is a certain degree of coldness, which may hurt the spleen and stomach and aggravate the symptom of loose stools after consumption. Cassia seeds are sweet, bitter, salty and slightly cold in nature, belonging to the liver and large intestine meridian. It has the function of clearing heat and brightening the eyes, moistening the intestines and laxatives. It can be used to treat dry stools caused by internal heat and intestinal dryness, defecation difficulties, as well as wind-heat attack triggered by headache, eye redness, unclear vision, headache and dizziness caused by hyperactivity of liver yang (hyperactivity of liver yang, which causes dizziness, dizziness, headache and other symptoms). However, cassia seeds are bitter and cold, so those who have cold spleen and stomach or loose stools may hurt their spleen and stomach and aggravate the symptoms of loose stools after consuming cassia seeds, so this kind of people should not use it. If necessary, it is recommended to go to a regular hospital and use it under the guidance of a medical doctor.