Generally with a breast pump can be sucked 3-4 times a day, but also according to the amount of milk can be appropriate increase or decrease. Breastmilk is the most suitable natural food for infants, and breastfeeding is encouraged after delivery, but when the mother is suffering from an acute stage of an infectious disease or needs to go to work, etc., it is not appropriate or suspended breastfeeding, you need to express the milk for storage. Generally with a breast pump when sucking milk can be sucked 3-4 times a day, but when the amount of milk, you can appropriately increase the number of times sucking, and will be sucked out of the milk stored in a special milk storage bag. Wash your hands before sucking the breast milk, the breast pump should be sterilized regularly, sucking the breast milk should be alternated between the two sides of the breast, each time sucking the breast milk for at least 20-30 minutes. Generally speaking, the milk should not be stored for more than 4 hours at room temperature, and if it is stored in the refrigerator, it should not be mixed with other foodstuffs so as to avoid contamination, and it can only be consumed once after it is rewarmed, and the rest of it should be discarded.