If a newborn baby has watery stools, it is most likely due to a cold abdomen or improper diet. First of all, the newborn’s abdomen should be wrapped to keep warm and the defecation should be observed. If the watery stool persists, it is recommended to go to the hospital promptly and use medication under the guidance of the doctor to avoid neonatal dehydration or other complications. Stool tests are needed to identify the specific cause and then administer the appropriate medication. Bacterial infections are often treated with antibiotics. For dilute watery stools caused by viruses, microecological preparations such as Lactobacillus tablets and Bifidobacterium trisporus tablets can be applied. However, the use of the above drugs requires strict regulation of the dosage used according to the newborn’s condition, and therefore needs to be used under the guidance of a doctor. In the process of feeding newborns, it is important to pay attention to the amount of feeding and the hygiene during feeding such as the water temperature and the sterilization of bottles to avoid accumulation of food and bacterial infection, which can lead to gastrointestinal discomfort. It is also important to keep the room temperature appropriate and to dress the newborn in appropriate clothing to avoid a cold abdomen. It is also important to keep the newborn hydrated to prevent dehydration due to excessive fluid loss. Parents should also pay attention to the newborn’s stool, which is usually a direct reflection of the newborn’s health. In addition, breastfeeding mothers should also pay attention to their own diet and avoid spicy and stimulating foods or foods that are too cold.