The anorexia period is a physiological phenomenon in the process of baby’s growth and development. The main manifestations of the anorexia period are as follows: 1. The baby suddenly appears to eat significantly less milk and the number of times he eats milk is significantly reduced. 2. The baby’s mental state and sleep are normal. The baby’s weight gain is basically normal. The phenomenon of milk aversion in breastfed babies is, on the one hand, due to the fact that babies can grasp their hunger and satiety more accurately and generally have no desire to eat when they are not hungry; on the other hand, it is due to the baby’s increasing interest in the outside environment, which leads to a decrease in the baby’s desire to eat, and this phenomenon will return to normal on its own after a period of time.