The correct way to use the breast pump has the following steps: 1.Preparation before use: first wash your breasts with warm water, then warm your breasts with a fumigated warm towel, thus promoting the expansion of the mammary glands and preparing them for the smooth sucking of milk; 2.Massage: massage your breasts, rotate in small circles from the periphery of your breasts towards your nipples, then gently rub your nipples with your thumb and forefinger and change directions to ensure that both The breast and nipple are stimulated in all directions to ensure that the milk is secreted smoothly. 3. Sucking: Put a sterilized breast pump over the areola to close it tightly and use the negative pressure to suck the milk out of the breast. The duration of sucking is determined by the volume of milk. Stop sucking when you feel pain in the nipple or when you can’t get milk out. If you use a unilateral breast pump, when the milk flow slows down, you can switch to the other side of the breast and suck it for about 3-5 times, which takes about 20-30 minutes in total. If you use a bilateral breast pump to suck both breasts at the same time, it will take about 15-20 minutes for each sucking. When the milk flow slows down, you can gently massage your breasts. 4. Cleaning: When the breast pump is finished, it must be soaked in hot water or disinfected in the microwave oven for next use. You should wipe your breasts after you finish pumping and use anti-spill pads to keep your breasts clean and dry. 5. Storage: After sucking out milk with the breast pump, you can pour the milk into a clean bottle to feed your baby, or you can store the sucked breast milk and put it into a breast milk storage bag to freeze it, avoiding the air from entering when storing it so that your baby will not be bloated and indigested when eating milk again. It should be noted that you should clean your hands before each breastfeeding session and choose a comfortable and quiet environment to relax your body and avoid disturbances from outsiders. At the same time, avoid too much sucking pressure or too long time to avoid damage to the breast ducts.