The reason why babies do not like to eat milk at 3 months are physiological anorexia, lack of micronutrients and so on. 1. physiological anorexia: baby in 3 months, milk will be more inattentive, and the surrounding environment is easy to distract the baby, so there will be no love of milk, parents should pay attention to the baby to create a quiet environment for milk. 2. lack of trace elements: such as lack of zinc, iron and so on can also lead to the baby’s appetite, do not like to eat milk. In this case, you need to follow the doctor’s instructions to give the baby zinc and iron supplement. If your baby doesn’t like to eat milk at 3 months old, you need to take your baby to the hospital for appropriate examination and treatment according to the actual cause.