Probiotics can regulate the balance of intestinal flora, 9-year-old children with intestinal flora dysbiosis, you can comply with the taking of probiotics bifidobacteria triple live bacterial powder, bacillus subtilis bifidus enteric capsule, Saccharomyces boulardii powder and so on. 1. Bifidobacterium triplex: it is a compound preparation, the main ingredients include Enterococcus faecalis, Lactobacillus acidophilus and Bifidobacterium longum, which is used for diarrhea and abdominal distension caused by intestinal flora imbalance, and also used for the treatment of mild to moderate acute diarrhea and chronic diarrhea. Combination of antibacterial drugs and this product can weaken its efficacy, should be taken separately. 2. Bacillus subtilis DLB Enteric Capsules: the main ingredients are Enterococcus faecalis and Bacillus subtilis, it can be used for the treatment of diarrhea, constipation, intestinal inflammation, abdominal distension, indigestion, loss of appetite caused by intestinal bacterial dysbiosis (antibiotics, chemotherapeutic drugs, etc.). Adverse reactions occasionally seen nausea, headache, dizziness, panic. The temperature of the water should not exceed 40. 3 Saccharomyces boulardii powder: the main active ingredient of this product is freeze-dried Saccharomyces boulardii. It is used to treat diarrhea in adults and children and diarrhea symptoms caused by intestinal flora imbalance. Because this product contains fructose and lactose, it is prohibited for patients who are intolerant to fructose and lactose. When using probiotic medications for 9 year olds, you need to take them under medical supervision and avoid self-medication.