As soon as you eat, you want to defecate, which may be a normal physiological phenomenon, or it may be related to intestinal flora imbalance, irritable bowel syndrome, gastroenteritis, etc., which can be improved through dietary modification, medication, and so on. 1. Normal physiological phenomenon: long-term use of food containing lactulose, sorbitol, high dietary fiber, will stimulate the intestinal tract to cause stool, if not accompanied by abdominal pain, diarrhea symptoms generally do not require special treatment. 2. Intestinal flora imbalance: you can eat more easy-to-digest food, avoid spicy and stimulating greasy food; you can also take probiotic drugs for treatment, such as bifidobacterium triplex, lactobacillus tablets and so on. 3. Irritable bowel syndrome: abdominal pain, diarrhea symptoms, need to take antispasmodic and antidiarrheal agents for treatment, such as scopolamine, montelukast, loperamide and so on. 4. Gastroenteritis: you can take anti-infective drugs for the cause of the disease as well as drugs to relieve diarrhea, such as amoxicillin, cefixime, ciprofloxacin, loperamide and so on. These drugs exist in different degrees of adverse reactions, such as dizziness, gastrointestinal irritation, skin rash, dry mouth, etc., must be used strictly under the guidance of a doctor.