Senna leaf is an irritating laxative, which promotes defecation by stimulating intestinal peristalsis. Long-term use will lead to drug resistance and drug dependence, and the gastrointestinal function of the elderly is weak. It is suggested that the elderly should not use irritating laxatives in the future, and patients can be given appropriate antidiarrheal drugs to inhibit intestinal peristalsis, such as compound phenylephrine, compound camphor tincture and loperamide. After oral administration, this medicine can inhibit the excessive peristalsis of the intestine, thus reducing the amount of feces discharged and treating diarrhea. If diarrhea is not relieved after taking the medicine, please go to the hospital as soon as possible.