Generally breast milk can be expressed about 100 to 200 milliliters at a time, but there are large individual differences. Each woman’s specific situation is different, each time the amount of milk out is also different, if the amount of lactation is more, a time can squeeze out about 100 to 200 ml of milk. If there is insufficient milk production, you may only be able to express a few dozen milliliters of breast milk, or even none at all, so there is no specific value for how much breast milk can be expressed at one time. The amount of milk a woman produces is related to her baby’s suckling, and frequent suckling of the breast by the baby can promote milk secretion. In addition, pay attention to rest, keep your mind and body happy, drink more soup, are all conducive to increase lactation, and thus increase the amount of milk each time. If breastmilk is insufficient, there is no need to be overly anxious, you can moderate with formula mixed feeding, as long as the baby’s spirit is good, do not cry, sleep peacefully, normal bowel movements can be, if there is any discomfort, you need to consult a doctor in a timely manner.