The baby change milk powder diarrhea may be too fast milk, milk protein allergy, gastrointestinal dysfunction, etc., the treatment can be gradually increase the amount of replacement of special milk powder, the use of probiotics, etc. to regulate. 1. change milk too fast: because the baby’s gastrointestinal function is relatively weak, if the change of milk powder is too fast, add more, the baby’s intestines and stomach on the new milk powder to adapt to the situation, there will be diarrhea, usually recommended that the baby change milk powder to gradually increase the amount of gradual replacement. 2. Milk protein allergy: baby change milk powder diarrhea may also be the baby on the new milk powder milk protein allergic reaction, usually recommended to replace the milk powder, such as deeply hydrolyzed milk powder. 3. gastrointestinal dysfunction: baby change milk powder diarrhea may also be because of gastrointestinal dysfunction, usually recommended the use of bifidobacteria and other probiotics to regulate intestinal treatment. If the baby change milk powder diarrhea symptoms are serious, or symptoms continue to not see improvement, should be timely to the hospital for treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication.