Puerperal infections are harmful to the mother’s body and have a negative impact on the feeding of the newborn, and they are also a cause of maternal death. Its incidence is 1-7.2%, so how to prevent puerperal infection is crucial for the mother. What can cause puerperal infection? There are more causes of puerperal infections, for example, the germs are brought into the vagina due to the lack of strict disinfection during delivery, or there are inflammatory lesions in other parts of the mother’s body, such as the respiratory and urinary tracts, which can also invade the vagina through hands and blood circulation, causing infection. In addition, due to the damage to the uterus, cervix and vagina during the delivery process, maternal physical exertion, weakness and poor resistance also create conditions for puerperal infection; in addition, if you have sex or take a tub bath or vaginal douche before delivery and do not pay attention to personal hygiene after delivery, it may also cause puerperal infection. To prevent puerperal infection, we should pay attention to prevention and the following points: 1. Pay attention to personal hygiene, increase nutrition moderately and drink more water. Prevention should start from pregnancy, pay attention to personal hygiene during pregnancy, pay attention to any abnormal vaginal discharge, odor and itching, and actively treat vaginitis and other parts of the infection; 2. In case of premature rupture of fetal membranes, prolonged labor, postpartum bleeding, etc., timely antibiotic treatment should be used to avoid systemic infection and subsequent puerperal infection; 3. 4.Ensure nutritional intake, give high-protein, high-fiber diet, and ensure sufficient fluid intake; 5.Keep a close watch on postpartum temperature, dew and pain, make observation records, help mothers to do perineal care and keep vulva clean.