According to Chinese medicine, cassia seed enters the liver meridian, cassia seed infusion can play a role in clearing liver fire (clearing liver fire) and brightening the liver. Cassia seeds for the legume obtuse leaf cassia or cassia (small cassia) dry mature seeds. The medicine tastes sweet, bitter, salty, slightly cold in nature, and belongs to the liver and large intestine meridians, with the effect of clearing heat and brightening the eyes (removing heat and evil in the body, promoting the recovery of vision), lubricating the intestines and relaxing the bowels. Clinically, it can be used for eye redness and astringent pain, shyness and tearfulness (eyes afraid of light, often tears), headache and dizziness, dark eyes, constipation and other diseases. In the use of cassia seeds should be noted that bitter and slightly cold, so the spleen and stomach cold (spleen and stomach weak cold) diarrhea patients should not be used. At the same time, the efficacy of this medicine is limited when used in water, and it should not be used as a substitute for medication to treat diseases. If you need to use cassia seeds, it is recommended to go to a regular hospital and use it under the guidance of a professional physician.