Diarrhea symptoms caused by indigestion in the elderly can be treated with probiotics, antidiarrheal and astringent, and proprietary medicines that aid digestion. The more common cause of indigestion and diarrhea in the elderly is the dysbiosis of the digestive tract, in which case probiotic drugs, such as Bacillus licheniformis capsules, Bifidobacterium bifidum quadruple live bacterial tablets, and Miltiorrhiza pancreatic enzyme tablets should be used to improve the gastrointestinal environment under the guidance of a doctor to improve the digestive tract function. While using probiotic drugs, patients also need to use antidiarrheal and astringent intestinal and digestive Chinese medicines for treatment, such as enteritis granules, four mill soup oral solution, and stomach rectification pill, etc., can effectively improve the patient’s loss of appetite, watery stools, diarrhea, stomach and epigastric stuffiness and distension and other related adverse symptoms. It is recommended that patients should first go to the hospital for relevant examinations to determine the specific cause of the disease before formulating an effective treatment plan.