For childhood diarrhea, initially probiotics can be administered to adjust the intestinal flora, commonly used probiotics include Bifidobacterium or Lactobacillus acidophilus. Next, it's important to protect the gastrointestinal mucosa, for which oral smectite powder can be given. Additionally, diarrhea can easily damage the gastrointestinal mucosa, so it's appropriate to supplement with zinc or folic acid to promote the repair of the gastrointestinal mucosa. It is also important to ensure fluid replenishment to maintain hydroelectrolytic balance, commonly using oral rehydration salts which can replenish both fluids and electrolytes. Attention should also be paid to the child’s mental response and urinary output.