Patients with diarrhea for a week in a row may be caused by acute gastroenteritis, ulcerative colitis, cholelithiasis and other diseases, which can be improved by general treatment, medication and surgery. 1. Acute gastroenteritis: patients should quit smoking, avoid alcohol, develop good eating habits, light and easy to digest diet. Gastric mucosal protectants, such as aluminum sulfate, magnesium aluminum carbonate, etc.; antidiarrheal drugs, such as loperamide, montelukast, etc.; probiotics, such as Bifidobacterium bifidum triple live bacterial preparation, bacillus subtilis double live bacterial preparation, etc.; antibiotics, such as ciprofloxacin, levofloxacin, etc., to carry on the treatment. 2. Ulcerative colitis: patients can follow the doctor’s instructions to use aminosalicylic acid preparation, such as mesalazine, osalazine, etc.; immunosuppressant, such as azathioprine, mercaptopurine, etc.; glucocorticosteroids, such as prednisone, methylprednisolone, etc. for treatment. Patients with bleeding, perforation and other symptoms can undergo surgical treatment. 3. cholelithiasis: patients should strengthen the nutritional support, supplemental protein, vitamins, patients can follow the doctor’s instructions to take non-steroidal anti-inflammatory drugs, such as diclofenac, ketoprofen, etc.; antispasmodic drugs, such as scopolamine, etc.; cholagogue, such as arbutin, such as ursodeoxycholic acid tablets, etc.; anti-infective drugs such as amoxicillin clavulanate, metronidazole, etc., for treatment, patients with serious conditions can be treated with surgical procedures. It is recommended that patients strictly follow the doctor’s instructions for medication, do not change the dose of drugs or private abuse of drugs, pay attention to monitoring the condition in life, such as diarrhea for a long time can not be relieved, the need to consult a doctor in a timely manner.