For 10-month-old infants with diarrhea, a comprehensive analysis should be made according to the season of onset, etiology, dietary habits, combined with stool examination. On the basis of adjusting the diet and reducing the amount of food and fine food eaten, the following drugs can be given: 1. Oral rehydration salts, which the parents of the child can buy at the hospital or pharmacy, combined with the instructions for self-supplementation; 2. Gastrointestinal mucosa protectors, such as montelukast; 3. Microecological preparations, such as Saccharomyces boulardii; 4. Stool laboratory tests can be performed, and if inflammation exists, anti-inflammatory drugs can be used according to medical advice.