Babies will not be held up during breastfeeding because they will release the nipple on their own when they are full and have a contented and sleepy expression. If the baby keeps on breastfeeding, it is possible that the breastmilk is insufficient or the formula is too diluted so that the baby is not full. To determine whether the baby is full in addition to observing the baby’s expression, there will be the following manifestations: 1, the mother’s breasts before breastfeeding, breastfeeding soft, are suggestive of the baby to eat enough breast milk. 2, according to the baby’s weight growth and the number of times of urination to determine the general six months after the birth of the baby’s body weight should not be less than one pound per month, the number of times a day should be maintained in the urine 6-8 times, and the urine is lighter in color, without a special smell of urine, etc..