The common causes of diarrhea can usually be divided into infectious and non-infectious. Infectious can be caused by bacteria, viruses, etc., while non-infectious can be caused by diet, medications, etc. 1. Infectious factors: acute enteritis caused by pathogens such as Escherichia coli and rotavirus; cholera caused by Vibrio cholerae; typhoid fever caused by Typhoid fever and other diseases, all of which can cause diarrhea symptoms. 2. Non-infectious factors: diet, such as eating puffer fish, fish gall bladder can cause acute diarrhea, allergic to dairy products, fish, shrimp, etc. Diarrhea can occur after eating. Drugs such as taking lincomycin, erythromycin, cisapride and other drugs cause diarrhea adverse reactions. Diseases such as ulcerative colitis, Crohn’s disease, chronic pancreatitis and other diseases can appear diarrhea symptoms. The above are some of the common causes of diarrhea, the specific causes are recommended to consult a doctor in time, diagnosed by a professional doctor.