Cassia seeds can be brewed to drink, can be decocted for internal use, but also can be powdered and applied externally. Cassia seeds for the legume cassia plant cassia dry mature seeds, with heat and eyesight (remove internal heat, promote vision recovery), laxative effect, you can soak or decoction water to take, you can also research the powder external compress. Select the right amount of fried cassia seeds, directly with boiling water, 20 to 30 minutes after drinking; you can use cassia seeds alone, can also use cassia seeds with chrysanthemums, wolfberries with brewing. Cassia seeds can also be decocted to take, choose the right amount of fried cassia seeds, crushed and minced, add water and decoct for 10 minutes to drink. Sautéed cassia seeds, ground into a powder, mixing water with gauze dipped in cassia water, eyes closed and external compresses eyes, temples and other parts of the eyes; mouth ulcers can be used in patients with cassia seeds powder on the mouth ulcers. The adverse reactions and contraindications of cassia seeds are not clear at present, and caution should be exercised for those with spleen and stomach deficiency (spleen and stomach weakness and cold) and loose stools (thin and unformed feces). If required, it is recommended to use the medicine under the guidance of a professional Chinese medicine practitioner.