Diarrhea after drinking probiotics may be caused by a cold abdomen, poor diet, and overuse of probiotics. 1. Abdominal cold: when the patient is taking probiotics, if there is a cold abdomen, it can also lead to diarrhea, may appear to drink probiotics diarrhea. 2. Dietary impurity: If the patient is taking probiotics, when there is dietary impurity, it will cause the patient to have gastroenteritis, which will cause the patient to have diarrhea, and there will also be diarrhea after the use of probiotics. 3. Excessive use of probiotics: When patients use probiotics for a long time, it may cause excessive use of probiotics, and the digestive system has not adapted to it, which will lead to diarrhea symptoms. When patients drink probiotics after diarrhea, in addition to the above reasons, there may be other reasons, the patient had better go to the hospital in time for examination, if the disease occurs, you can follow the doctor’s advice for treatment.