1. Reasons why babies don’t eat milk powder. There may be many reasons why babies don’t eat milk powder. Some babies may be allergic to a certain brand or flavor of milk powder, while others may have digestive problems, such as stomach problems or gastrointestinal infections. In addition, some babies may just not like the taste of milk powder, or they may have started to grow teeth and feel discomfort in their mouth and throat. 2. How to solve the problem of baby not eating milk powder. If your baby does not eat milk powder, you can try the following