Constipation after changing milk powder may be related to intolerance of the ingredients in the milk powder, indigestion, etc. Generally, it can be treated by adjusting the feeding method of the changed milk powder, massage, and the use of medication. 1. Adjust the feeding method of the replaced milk powder (1) Adjusting the feeding method: When replacing the milk powder, it is important to pay attention to the fact that the old milk powder should not be replaced completely all of a sudden, but should be replaced in a gradual manner. For example, mix the old and new milk powder according to a certain proportion, and then gradually replace all of them with the new milk powder at the end. (2) Replacement of milk powder: If after the above adjustments, the constipation symptoms are still not relieved, then you can consider replacing other milk powder. 2. Massage: you can also massage the baby’s abdomen to relieve constipation, but the massage should pay attention to the power to be even and gentle, not too hard. 3. the use of drugs: if the above way still does not relieve, can promptly consult a doctor under the guidance of taking intestinal probiotics, such as bifidobacteria triple live bacteria. In addition, after the change of milk powder baby constipation may also exist in the gastrointestinal peristalsis function slower, indigestion and so on, can be appropriate to increase the baby’s water intake.