Drinking soy milk after diarrhea can be seen in indigestion, infectious enteritis, allergic enteritis and other diseases, according to the type of disease to choose digestive drugs, antibiotics or antihistamines and other drugs for treatment. 1. Indigestion: Soymilk is a kind of drink that is easy to produce gas and has a high content of vegetable protein, which can increase the burden on the gastrointestinal tract and trigger symptoms of indigestion such as diarrhea, belching (hiccups), and bloating after drinking too much of it. It is recommended to take multi-enzyme tablets, chicken gold tablets and other digestive drugs, with montelukast and other astringent antidiarrheal treatment. 2. Infectious enteritis: patients drinking soy milk if not processed or placed for a long time, can breed bacteria and other pathogens leading to intestinal infections, which can further trigger diarrhea, abdominal pain, vomiting, fever and other symptoms of infectious enteritis. It is recommended to take antibiotics such as norfloxacin and cefixime after diagnosis; 3. Allergic enteritis: Allergic people can be allergic to the protein in soymilk, and symptoms of allergic enteritis such as diarrhea or abdominal pain and blood in the stool will appear within a short time after drinking soymilk. After diagnosis of allergic enteritis, can take cetirizine tablets and other antihistamines, prednisolone tablets and other glucocorticoid drugs, or with montelukast and other astringents. Drinking soy milk after the cause of diarrhea has a variety of possible, it is recommended to seek medical attention, specific medication should be under the guidance of a doctor.