Constant diarrhea may be related to gastrointestinal disorders, medication factors, liver and gallbladder diseases, systemic diseases, and so on. Diarrhea is diarrhea, if the diarrhea time more than two months, in the clinical known as chronic diarrhea. 1. The most common causes are gastrointestinal diseases, such as intestinal flora disorders, irritable bowel syndrome, functional diarrhea, enteritis, ulcerative colitis, chronic bacillary dysentery and so on, which can lead to chronic diarrhea. 2. If you take metformin drugs for a long time, etc., the adverse reaction of the drug can lead to chronic diarrhea in the organism. 3. Some liver and gallbladder diseases, such as chronic cholecystitis, chronic hepatitis, cirrhosis, can also lead to chronic diarrhea. 4. Some systemic diseases, such as diabetes mellitus, hyperthyroidism, systemic lupus erythematosus, leukemia, etc., because the intestinal peristalsis is relatively fast, chronic diarrhea and other symptoms will occur. There are many other reasons for patients to have diarrhea all the time, if the symptoms are serious or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, after clarifying the cause of the disease, targeted treatment under the guidance of the doctor.