Mastitis during lactation is usually caused by Staphylococcus aureus, but can also be caused by Staphylococcus epidermidis and Streptococcus species. Milk stagnation and bacterial invasion are two important factors in mastitis. Acute mastitis belongs to the category of “canker sores” in Chinese medicine. Bacteria enter the breast from broken skin or cracked nipples and enter the breast tissue along the blood vessels and lymphatic vessels, thus causing mastitis. The infection is most common during the first 6 weeks of breastfeeding or during the weaning period. Patients usually have typical inflammatory symptoms such as redness, swelling, heat, pain, or systemic symptoms such as fever. If an abscess forms, a fluctuating mass may be palpable and covered with shiny, reddened skin. Patients may develop toxic symptoms such as fever, rapid heart rate, and leukocytosis. Early application of antibiotics can control the infection and stop abscess formation. Penicillin or cephalosporin antibiotics can be given, and erythromycin can be applied to those who are allergic to penicillin and cephalosporins. The use of antibiotics personally prefers penicillin or first-generation cephalosporin antibiotics, and not the higher end is better. Lactating women should not apply quinolones such as tetracycline and ciprofloxacin and chloramphenicol to treat infections because they can enter the breast milk to the detriment of young children. Due to the media and the internet, many people are currently resistant to antibiotics, and mastitis is an indication for antibiotics. Coupled with the fact that we are a country where antibiotics are readily available, it is important to be careful when using the appropriate antibiotics and to follow your doctor’s instructions. Tetracycline can be secreted from breast milk, and the high concentration in breast milk can form stable calculus in any bone tissue, which may lead to serious adverse effects such as yellowing of permanent teeth, enamel dysplasia and bone growth inhibition. Ciprofloxacin and other quinolones may cause joint lesions. Chloramphenicol may lead to severe bone marrow suppression and gray baby syndrome. Advise against unauthorized application of antibiotics. Patients who do not improve rapidly after antibiotic treatment need further ultrasound or fine needle aspiration to determine if an abscess has formed and to rule out the possibility of an underlying tumor. If abscess formation is clinically or ultrasonically suspected, the abscess should be drained under local anesthesia and the abscess cavity flushed with local anesthetic medication to relieve pain. Repeated aspiration and antibiotic combinations are usually effective in dissipating abscesses, and this is the current common treatment for most breast abscesses. Aspiration should be repeated every 2-3 days until no more pus is withdrawn. Breastfeeding should be continued if possible, as this promotes drainage of the full breast segments and helps to dissipate the infection. There is no known data that infants are harmed by bacteria in the breast milk, and likewise by penicillin, cephalosporin antibiotics, or erythromycin. A small number of lactating abscesses require incision and drainage, and the incision does not need to be closed after incision. The medication is changed regularly depending on the incision, usually repeated once every 2-3 days. Many patients and families find this difficult to accept, and it is important to understand that an infected incision cannot be sutured under normal circumstances. At this time the affected side should stop breastfeeding, but the affected side should drain the milk. If the effect is poor, you can consider suppressing milk secretion, which is what we call back milk. Chinese medicine is very profound and may be more effective when used in conjunction with traditional Chinese medicine. Many netizens ask how to prevent several suggestions: 1, pay attention to lactation hygiene, often wash the nipple with warm water. 2, if there is nipple invagination, you can often squeeze and lift to correct. 3, to develop a good habit of regular breastfeeding, do not let the baby sleep with the nipple. 4.Every time you breastfeed, you should suck up the milk. If there is any stagnation, you can massage or use a breast pump to drain the milk and clean the nipple after breastfeeding. 5.The nipples should be treated promptly if they are damaged or cracked. 6. Pay attention to the baby’s oral hygiene. In short, avoid milk stagnation, prevent nipple damage and keep its plot.