A breast pump is a tool used to express breast milk that has accumulated in the mammary glands. It can be used to maintain the milk supply when the mother and baby are separated and to suck out the milk when it is stagnant to avoid mastitis from blocking the milk ducts. You should do a good job of breast massage and cleaning before sucking milk. Massage and clean your breasts: 1. Massage your breasts: Wash your hands and use your palms to push and caress from the root of your breasts from the outside to the inside along the breast ducts and gently towards the nipples to promote blood circulation and unclog the mammary glands. The thumbs can be placed under the armpits, the remaining four fingers from the bottom of the breast to hold up, gently rubbing the breast, to avoid excessive force caused by damage. After that, you can use a hot towel to apply a hot compress to your breasts locally. 2. Wash your breasts: Use your index and middle fingers to gently wash your nipples, check whether the milk delivery holes are open, and then wash your areolas and breasts in a circular pattern with your nipples as the center. 2. Sucking: 1. Manual breast pump: clean the breast pump and sterilize it strictly; press the areola with both thumbs and forefingers, pick open the skin of the areola and expose the nipple; put the wide mouth of the sterilized breast pump over the skin around the nipple to prevent air from entering so as to avoid air leakage; press the handle of the breast pump lightly with a comfortable strength to make the milk sucked into the breast pump through negative pressure attraction; when there is no pressure, press the handle again repeatedly until it is full. When there is no pressure, press the handle again and again until the suction is sufficient; 2. Electric breast pump: after installing the sterilized breast pump, check whether the connection tubes are smooth; put the light mouth of the breast pump over the skin injury around the nipple to prevent air from entering and making the suction force lose; choose the appropriate attraction force to make the milk flow into the breast pump container; when sucking, you should pay attention to the fact that the force of attraction should be gradual and maintain a fixed but gentle pressure to avoid local pulling The breast milk should be sealed in a sterilized bottle and stored in the refrigerator after the breast pump is used; the milk should not be stored for too long, but can be stored at a low temperature of 4-8°C for 6-8h; the milk should be rewarmed with warm water and consumed immediately, avoiding repeated heating and rewarming; the mother should wipe her breasts in time after breast pumping to keep them clean and fresh. Keep your breasts clean and fresh.