Younger babies should be fed on demand. Breastfeeding at the first cry of older babies may lead to dependency, as well as problems such as indigestion, night feeding and poor sleep. Babies of younger age can be fed on demand. Generally speaking, breastfeeding as soon as the baby cries does not require special intervention as long as the baby eats. However, if the baby is older, should develop the habit of regular feeding, it is best not to feed the baby as soon as the baby cries, feeding the baby during the crying process, although it can calm the baby’s emotions, but it does not improve the baby’s discomfort, if the baby is not hungry and caused by crying, it may mask the baby’s physical symptoms, resulting in the exacerbation of the disease. If the crying to the baby breastfeeding may lead to eating too much, the burden on the digestive tract increased, may increase the incidence of gastroesophageal reflux, but also may lead to the baby obesity, eating night milk, affecting sleep and other problems. It is best to seek prompt medical attention if you find any uncomfortable symptoms appearing.