Euryale ferox seed contains a lot of carotene, which can be used to treat eye diseases, because carotene will be converted into vitamin A after entering the human body, which is used to treat night blindness or dry eye disease; Second, it has antidiarrheal effect, which can be used to treat urination or diarrhea; The third, for men, has the effect of Tonifying the kidney and strengthening yang, can be used to treat spermatorrhea.