In general, using breast pumps in the right way will not cause mastitis. When a woman is breastfeeding, the use of a breast pump can suck out the milk that is left in the breast or blocked to reduce the discomfort of breast swelling and pain. If the breast pump is used in the correct way, it will not lead to mastitis, but if the woman uses the breast pump too vigorously resulting in damage to the mammary glands, there is bacterial growth in the breast pump or the milk is not drained in a timely manner, it may lead to inflammation of the mammary glands. When suffering from mastitis, breastfeeding women may experience breast pain, redness, swelling, fever, and in severe cases, further breast abscesses may form. Mastitis patients can take the local hot compresses to promote the dissipation of inflammation, inflammation is more serious patients can strictly follow the doctor’s instructions for the use of antibiotics, such as amoxicillin, cefixime, etc. for anti-infective treatment, and during the period of treatment should be temporarily stop breastfeeding. It is recommended that breastfeeding women do a good job of breast care, avoid wearing too tight or breathable underwear, regular cleaning of the nipples, change underwear to avoid infection.