The key to preventing acute mastitis lies in avoiding milk stasis, preventing nipple injury, and maintaining cleanliness. It is essential to frequently wash both nipples with warm water and soap. If the nipples are inverted, they can often be corrected by pinching and pulling. It is important to establish a regular breastfeeding schedule, ensuring that the baby does not sleep with the nipple in their mouth. After each breastfeeding session, the milk should be fully drained; if there is any accumulation, massage or use a breast pump to remove the milk completely. The nipples should be cleaned after breastfeeding. If there is any damage or cracking on the nipple, it should be treated promptly. Attention should also be paid to the oral hygiene of the baby.