The baby drink formula three or four times a day, if the baby’s growth and development is good, not accompanied by other discomforts is normal, if the baby’s growth and development is delayed, watery stools, mucus stools, there may be food allergies, gastroenteritis and other diseases. 1. Normal: formula-fed babies usually less frequent stools than breastfeeding, usually 1-3 times a day, stools for the thin paste, yellow, a little milk petals are normal stools, the baby’s milk, spirit, sleep, good growth and development, is normal. 2. Food allergy: If the baby has a significant increase in the number of stools compared to ordinary, watery stools, rashes, etc., may be allergic to the ingredients in the formula milk or food intolerance, it is recommended to improve the allergen test, avoid allergic substances. 3. Gastroenteritis: viral and bacterial gastroenteritis often cause diarrhea, accompanied by fever, vomiting, loss of appetite, etc. If viral infections need hydration, fever and other symptomatic treatment, if bacterial infections can be prescribed antibiotics such as cefixime. Parents need to combine the regularity of stools, stool characteristics, baby’s symptoms and other judgments, it is recommended to seek medical help in a timely manner.