The baby suddenly does not eat the bottle, may be related to the parent phenomenon, conditioned reflex, anorexia, indigestion and other factors. 1. Pro-mother phenomenon: If the baby is relatively young, then the feeding method is mainly breastfeeding, the baby may become dependent on breast milk, pro-mother phenomenon, if you choose to use formula feeding, the taste will not be as good as breast milk, so the baby will not be interested in the bottle. 2. Conditioned reflex: If the baby is accidentally scalded during bottle feeding, or if the baby is adversely stimulated and has an uncomfortable feeling, the baby will resist the bottle and will not eat the bottle. 3. anorexia: in the baby 3 ~ 4 months or so will appear anorexia, this time the baby will respond to external stimuli, the activity will gradually increase, if the baby is not too hungry, or no other uncomfortable phenomenon, will suddenly do not eat milk, the phenomenon of refusing the bottle. 4. indigestion: due to the baby’s gastrointestinal tract function and digestive system function development is not sound, after eating and drinking will appear indigestion, the baby is not comfortable, will appear suddenly do not eat the bottle phenomenon. If the baby suddenly do not eat the bottle situation can not be effectively relieved, to go to the hospital in time to check, symptomatic treatment, to avoid affecting the growth and development of the baby.