Small intestinal flora can be regulated through lifestyle intervention and medication. 1. Lifestyle intervention: maintain a light diet, eat foods rich in probiotics, such as yogurt, etc.; avoid oily, spicy, high-fat, high-sugar foods; strengthen the exercise in daily life, which can help promote gastrointestinal peristalsis and promote defecation. 2. Medication: When there is intestinal flora imbalance, gastrointestinal dysfunction, etc., you can take medication, such as bifidobacterium, bacillus licheniformis, lactobacillus, etc., which can help promote intestinal health and inhibit harmful intestinal growth; when accompanied by intestinal bacterial infections, you can use antibiotics, such as ciprofloxacin and other treatments. Patients who need to regulate intestinal flora should maintain a healthy lifestyle, and those who need to use medication to regulate intestinal flora should take it under the guidance of a doctor.