It may or may not be normal for a 1-month-old baby on formula milk not to eat nighttime milk, depending on the baby’s usual milk intake and his or her condition. 1 month baby diet is usually irregular, mostly hungry, on-demand feeding, if the bedtime supplemental milk is sufficient, the baby may not wake up in the middle of the night to eat the night milk, or the baby usually eat night milk less often, may not eat the night milk, these are the normal. If the baby usually used to eat night milk, suddenly do not eat is not normal, it is recommended to send to the hospital in time for examination. In addition to this, you can also through the baby’s usual mental state, activities, the amount of milk and so on comprehensive judgment of the baby does not eat night milk situation is normal. If there is any abnormality, it is recommended to send the baby to the hospital immediately, so as to make a clear diagnosis and then carry out targeted treatment.