The amount of milk drunk by infants varies greatly among individuals. Newborn babies usually breastfeed about 70-100 ml each time and about 7-8 times a night. Because of the large individual differences, the general amount of breastfeeding should be based on the baby’s specific situation. Newborn babies each breastfeeding amount of 70-100 ml, the interval of about 3 hours of breastfeeding once, the day and night of breastfeeding intervals are about the same, generally the second half of the night interval time is a little longer, all day breastfeeding about 7-8 times. 2-3 months of infants each breastfeeding up to 120-150 ml, breastfeeding interval can be extended to 3.5-4 hours. 4-5 months of infants each breastfeeding amount of 150-200 ml, all-day breastfeeding 5-6 times, the second half of the night can continue to sleep for 6-7 hours without breastfeeding. If the baby does not want to drink milk, refuses to eat, and loses weight significantly, the pediatrician’s guidance is needed and the etiology is sought to avoid consequences such as malnutrition.