Breastfeeding diarrhea may be caused by high prostaglandin content in breast milk, lactose intolerance, digestive enzyme deficiency, etc. It can be relieved by changing breast milk, medication, and adding complementary food appropriately. Breastmilk contains high levels of prostaglandins, which can promote peristalsis in the small intestine, thus leading to diarrhea; some children may have lactose intolerance, or digestive enzyme deficiencies, or underdevelopment of the digestive system, which may also lead to breastmilk diarrhea. Generally, if the child’s nutrition is normal and physical development is normal, no special treatment is needed. However, if there are abnormalities, such as lactose intolerance, the best way is to change milk, such as amino acid milk powder, and you can choose the right milk powder according to the baby’s age. If for digestive enzyme deficiencies can be oral lactase and so on. As well as in the appropriate time to add complementary foods to ease the symptoms of diarrhea. If breastfeeding diarrhea occurs, you should pay attention to the baby’s growth and development trend, if there is an abnormality, you should seek medical treatment. The above medications should be used in accordance with medical advice.